Document:

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                                                                    EXHIBIT 10.4

                             STOCK PLEDGE AGREEMENT

        THIS STOCK PLEDGE AGREEMENT (this "Pledge") dated as of December 25,
1999, is entered into by and between Richard T. Harrison, an individual (the
"Pledgor"), and Venture Catalyst Incorporated, formerly known as Inland
Entertainment Corporation, a Utah corporation (the "Pledgee").

                                    RECITALS:

        A. The Pledgor is the owner of 750,000 shares of the Pledgee's common
stock, $.001 par value per share, represented by Certificate No. SD3572 (which,
together with any other shares of the Pledgee's common stock subsequently
acquired by the Pledgor are referred to herein as the "Pledged Shares").

        B. The Pledgor and the Pledgee have entered into that certain Settlement
and Release Agreement of even date herewith (as the same may be amended,
modified or restated from time to time, the "Settlement Agreement").

        C. Pursuant to the Settlement Agreement, the Pledgee and the Pledgor
have agreed, among other things, to enter into a Call Agreement of even date
herewith relating to, and secured by, the Pledged Shares (as the same may be
amended, modified or restated from time to time, the "Call Agreement").

        NOW, THEREFORE, in order to induce the Pledgee to enter into the
Settlement Agreement and the Call Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

        1. Pledge.

                (a) The Pledgor hereby pledges, hypothecates, assigns,
transfers, sets over and delivers to the Pledgee, and grants to the Pledgee a
security interest in:

                        (i) the Pledged Shares;

                        (ii) each certificate or other instrument representing
any of the foregoing;

                        (iii) distributions or dividends or other monies of
every kind and nature payable in respect of any or all of the foregoing; and

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                        (iv) the proceeds of the foregoing; (collectively, the
"Collateral"), in order to secure all obligations of the Pledgor hereunder and
the obligations of the Pledgor under the Call Agreement.

                (b) In order to perfect a security interest in the Collateral,
the Pledgor hereby delivers to the Pledgee appropriate undated stock transfer
powers duly executed in blank for the Pledged Shares beneficially owned by the
Pledgor on the date hereof and from time to time will deliver appropriate
undated stock transfer powers duly executed in blank for any Pledged Shares
acquired after the date hereof to be pledged hereunder.

                (c) During the term of this Pledge, the Pledgor shall not sell,
transfer, assign or otherwise dispose of, grant any option with respect to, or
mortgage, pledge (other than pursuant to this Pledge) or otherwise encumber the
Pledged Shares or any interest therein.

        2. Power of Attorney, Income.

                (a) The Pledgor hereby irrevocably appoints the Pledgee the
Pledgor's attorney, coupled with an interest, with full power of substitution:

                        (i) Upon a Default (as hereinafter defined) or pursuant
to the exercise of a call under the Call Agreement, to arrange for the transfer
of the Pledged Shares or any part thereof into the name of the Pledgee or into
the name of the Pledgee's nominee, if, at any time, the Pledgee shall, in its
sole discretion reasonably exercised, deem such a transfer to be desirable; and

                        (ii) For the purposes of taking any action and executing
any instrument, in the name of the Pledgor or otherwise, which the Pledgee may
at any time deem necessary or appropriate in order to (i) perfect its security
interest in the Collateral or any part thereof, (ii) upon a Default hereunder,
foreclose said security interest or otherwise exercise its rights under this
Pledge and in and to the Collateral, or (iii) deliver the Pledged Shares to the
Pledgee or any other person exercising rights pursuant to the Call Agreement.

                (b) As long as no Default hereunder shall have occurred and be
continuing, the Pledgor shall, unless otherwise prohibited, be entitled to
receive and retain any and all dividends and interests on the Pledged Shares,
but any such dividends in stock or other securities of the Pledgee shall be and
become part of the Pledged Shares.

                                      -2-
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                (c) Upon the occurrence and during the continuance of a Default
hereunder, the right of the Pledgor to receive the dividends and interest which
the Pledgor is authorized to receive and retain pursuant to Paragraph 2(b) shall
cease, and all such rights shall thereupon become vested in the Pledgee;
provided, however, that the Pledgee, as the sole further condition to the
vesting pursuant to this Paragraph 2(c) of such rights and powers of the
Pledgee, shall notify the Pledgor in writing that the Pledgee elects to exercise
such rights and power, and the Pledgee shall have the sole and exclusive right
and authority to receive and retain the dividends and interest which the Pledgor
would otherwise be authorized to retain pursuant to Paragraph 2(b) hereof.

                (d) Upon the occurrence and during the continuation of a Default
hereunder, the Pledgee shall have an irrevocable proxy to vote all the Pledged
Shares, with full power of substitution, at all meetings and actions, without
meeting and any action for which shareholders consent is required or given. This
proxy coupled with an interest may not be revoked while the Call Agreement is in
force.

        3. Representations and Warranties. The Pledgor represents and warrants
that:

                (a) This Pledge constitutes the valid, binding and enforceable
obligation of the Pledgor.

                (b) The Pledgor shall defend the Pledgor's title to the Pledged
Shares and sole beneficial ownership thereof against all persons claiming any
interest therein except the Pledgee or any person claiming through the Pledgee.

                (c) Except for the restrictions imposed by the Call Agreement,
this Pledge and restrictions on offerings and sales of securities imposed by
applicable securities laws of the United States of America or any state or
commonwealth thereof, there are not and will not be during the term of this
Pledge any restrictions upon the sale or other disposition of any of the
Collateral.

                (d) Except as contemplated by Paragraph 3(c), the Pledgor has
good and valid title to the Pledged Shares, free and clear of any liens, claims,
encumbrances, security interests, options, charges and restrictions of any kind,
and the Pledgor now has and will have during the term of this Pledge, without
obtaining the consent of any governmental authority, stock exchange or any other
persons except the Pledgee, the right to pledge, to grant a security interest
in, and otherwise to transfer and to dispose of the Collateral free of any
liens, security interests or other encumbrances, and free of any rights or
equities in favor of any other persons, except those created by this Pledge.

                                      -3-
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        4. Defaults and Remedies. Any of the following shall constitute a
"Default" under this Pledge:

                (a) if any representation or warranty made by the Pledgor in
this Pledge or in any instrument, document or certificate furnished hereunder or
in connection herewith shall prove to have been incorrect in any material
respect at the time it was made;

                (b) if the Pledgor fails to observe or perform any of the
Pledgor's covenants, agreements, obligations and undertakings contained in this
Pledge after ten (10) days' written notice by the Pledgee; or

                (c) the Pledgor breaches the Call Agreement in any material
respect or fails to deliver the Pledged Shares upon the exercise of the Call
Option (as defined in the Call Agreement).

In the event of any such Default, the Pledgee shall be cumulatively or
alternatively entitled, without further notice to the Pledgor, and without
necessity for legal proceedings (i) if the Default is a failure to deliver
certificates representing the Pledged Shares subject to the Call Agreement, to
deliver such certificates and to hold the proceeds received from the person
exercising rights under the Call Agreement as additional Collateral, (ii) to
sell any or all of the securities serving as Collateral; and (iii) to transfer
to the name of, or register in the name of, the Pledgee or its nominee, as owner
rather than a secured party, any or all Collateral. In addition, and not by way
of limitation of the foregoing, the Pledgee shall have any or all remedies
provided by law, including, but not limited to, all rights and powers of a
secured party after default pursuant to the California Commercial Code.

        5. Application of Proceeds of Sale, etc. The proceeds of any sale or
other disposition of, or any collection of or realization on, any of the
Collateral, and any cash held by the Pledgee as part of the Collateral
hereunder, shall be applied by the Pledgee from time to time to pay:

                (a) First, all costs, fees and expenses paid or incurred by the
Pledgee (including all amounts paid by the Pledgee for the account of the
Pledgor or to the Pledgee's agents, brokers, counsel and consultants) in
connection with the exercise, protection or enforcement of the Pledgee's rights
and remedies under this Pledge and in and to the Collateral, including any and
all taxes, assessments, charges and encumbrances of every kind prior to the
security interest created by this Pledge which the Pledgee may consider
necessary or desirable to pay;

                (b) Second, the excess, if any, shall be held as Collateral to
the extent any remaining obligations under the Call Agreement remain
unsatisfied; and

                                      -4-
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                (c) Third, the excess, if any, after all remaining obligations
under the Call Agreement have been satisfied, shall be paid to the Pledgor or to
whomever is then legally entitled to receive the same

        6. Duty of the Pledgee; Exercise of Rights and Remedies. The Pledgee
shall have no duty as to the protection of any of the Collateral or any income
with respect thereto, nor as to the preservation of rights against prior
parties, nor as to the preservation of any rights pertaining to any of the
Collateral beyond reasonable care in its custody. Upon Default hereunder, the
Pledgee may exercise its rights and remedies with respect to any of the
Collateral without resort or regard to other security or sources of payment for
the Pledgor's obligations.

        7. No Release; Waivers, Etc.

                (a) No Release. The Pledgor shall continue to be liable under
this Pledge and the provisions hereof shall remain in full force and effect
notwithstanding (i) the Pledgee's waiver of or failure to enforce any of the
terms, covenants or conditions contained in the Settlement Agreement or any
modification thereof; or (ii) any release of any real or personal property or
other security then held by the Pledgee for the performance of the Pledgor's
obligations hereunder.

                (b) Waiver of Demand. The Pledgor hereby waives: (i) diligence
and demand of payment; (ii) all notices to the Pledgor or to any other person,
including, but not limited to, notices of the acceptance of this Pledge or
notice of any other matters relating thereto; (iii) all demands whatsoever; (iv)
any statute of limitations affecting the Pledgor's liability hereunder or the
enforcement thereof; and (v) all principles or provisions of law, which conflict
with the terms of this Pledge. Moreover, the Pledgor agrees that his obligations
shall not be affected by any circumstances which constitute a legal or equitable
discharge of a guarantor or surety.

                (c) No Prior Remedy Received. The Pledgor agrees that the
Pledgee or its assigns and endorsees may enforce this Pledge without the
necessity of resorting to or exhausting any security or collateral; and the
Pledgor hereby waives the right to require the Pledgee or its assigns or
endorsees to foreclose any lien on any real or personal property, to pursue any
other remedy or to enforce any other right.

                (d) No Limitation of Rights. The Pledgor further agrees that
nothing contained herein shall prevent the Pledgee from suing on the Call
Agreement or from exercising any rights available to it thereunder and that the
exercise of any of the aforesaid rights shall not constitute a legal or
equitable discharge of the Pledgor. The Pledgor hereby authorizes and empowers
the Pledgee to exercise, in its sole discretion, any rights and remedies, or any
combination thereof, which may then be available.

                                      -5-
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        8. Cumulative Remedies. The remedies provided in this Pledge in favor of
the Pledgee shall not be deemed exclusive but shall be cumulative and shall be
in addition to all of the remedies in favor of the Pledgee existing at law or in
equity.

        9. Terms Subject to Applicable Law. All rights, powers and remedies
provided herein may be exercised only to the extent that the exercise thereof
does not violate any applicable laws, and are intended to be limited to the
extent necessary so that they will not render this Pledge invalid, unenforceable
or entitled to be recorded, registered or filed under any applicable law. If any
term of this Pledge or any application thereof shall be held to be invalid,
illegal or unenforceable, the validity of any other terms of this Pledge or any
other applications of such term shall in no way be affected thereby.

        10. Miscellaneous.

                (a) Waivers. No failure to exercise and no delay in exercising
on the part of the Pledgee, any right, power or remedy under this Pledge or the
Call Agreement shall operate as a waiver thereof; nor shall any single or
partial exercise of any right, power or remedy hereunder or thereunder preclude
any other or further exercise thereof or the exercise of any other right, power
or remedy. The failure of the Pledgee to insist upon the strict observance or
enforcement of any provision of this Pledge shall not be construed as a waiver
or relinquishment of such provision. Any waiver of any right, power, remedy,
term or condition contained herein shall only be effective if it is in writing
and signed by the Pledgee.

                (b) Survival of Agreements, etc. All representations,
warranties, covenants and agreements made by the Pledgor in this Pledge or in
any instrument, document or certificate furnished hereunder or in connection
herewith shall be deemed to have been relied upon by the Pledgee,
notwithstanding any investigation heretofore or hereafter made by the Pledgee,
and shall survive the delivery of this Pledge, the Collateral and the incurrence
of any obligations.

                (c) Notices. All notices, requests, demands, claims and other
communications hereunder shall be in writing and shall be deemed to have been
duly given (i) if personally delivered; (ii) if sent by telecopy, facsimile or
other electronic means; or (iii) if mailed by overnight or by first class,
certified or registered mail, postage prepaid, return receipt requested, and
properly addressed as follows:

                         If to the Pledgor, to:

                                Richard T. Harrison
                                747 Golden Park Avenue
                                San Diego, California 92106
                                Fax: (619) 239-5601, c/o Richard E. Sparber, Esq

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                                 e-mail:  rsparber@sddowntown.sfprdom.sfpr.com

                          with a copy to:

                                 Sparber, Ferguson, Ponder & Ryan
                                 701 B Street, 10th Floor
                                 San Diego, California 92101-8103
                                 Attn:  Richard E. Sparber, Esq.
                                 Fax:  (619) 239-5601
                                 e-mail:  rsparber@sddowntown.sfprdom.sfpr.com

                          If to the Pledgee, to:

                                 Venture Catalyst Incorporated
                                 16868 Via Del Campo Court, Suite 200
                                 San Diego, California 92127
                                 Attn:  Kevin McIntosh
                                        Vice President, Chief Financial Officer,
                                        Secretary and Treasurer
                                 Fax:  (858) 716-2101
                                 e-mail: kmcintosh@inld.com

                                      -7-
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                          with a copy to:

                                 Paul, Hastings, Janofsky and Walker, LLP
                                 695 Town Center Drive, 17th Floor
                                 Costa Mesa, California 92626
                                 Attn:  John F. Della Grotta, Esq.
                                 Fax:  (714) 979-1921
                                 e-mail:  jfdellagrotta@phjw.com

Such addresses may be changed, from time to time, by means of a notice given in
the manner provided above. Notice will conclusively be deemed to have been given
when personally delivered (including, but not limited to, by messenger or
courier); or if given by mail, on the date of delivery, if given by Federal
Express or other similar overnight service or on the third day after being sent
by first class, certified or registered mail; or if given by telecopy or
facsimile machine or other electronic media, when confirmation of transmission
is indicated by the sender's machine. Notices, requests, demands and other
communications delivered to legal counsel of any party hereto, whether or not
such counsel shall consist of in-house or outside counsel, shall not constitute
duly given notice to any party hereto.

                (d) Amendments. This Pledge may only be amended by a writing
executed by the Pledgor and the Pledgee.

                (e) Governing Law. This Pledge shall be governed by and
construed in accordance with the laws of the State of California without giving
effect to principles of conflict of laws. The Pledgor and the Pledgee hereby
agree that all actions or proceedings arising directly or indirectly hereunder,
whether instituted by the Pledgee or the Pledgor, shall be litigated in courts
having situs within the State of California, County of San Diego and the Pledgor
and the Pledgee hereby expressly consent to the jurisdiction of any local, state
or Federal court located within said state and county, and consent that any
service of process in such action or proceeding may be made by personal service
upon the Pledgor or the Pledgee wherever the Pledgor or the Pledgee may be
located, respectively, or by certified or registered mail directed to the
Pledgor or the Pledgee at his/its last known address. The Pledgor and the
Pledgee waive trial by jury, any objection based on forum non conveniens, and
any objection to venue of any action instituted hereunder.

                (f) Successors and Assigns. This Pledge shall be binding upon
and shall inure to the benefit of the Pledgor and the Pledgee and their
respective successors and assigns.

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                (g) Section Headings. The headings set forth in this Pledge are
for convenience of reference only and shall not be deemed to define or limit the
provisions hereof or to affect in any way their construction and application.

                (h) Termination. This Pledge shall terminate and the Collateral
returned to the Pledgor after the Call Agreement has terminated.

                            (Signature Page Follows)

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                    (SIGNATURE PAGE - STOCK PLEDGE AGREEMENT)

        IN WITNESS WHEREOF, the Pledgor and the Pledgee have executed and
delivered this Pledge on the date first above written.

                                            PLEDGOR:

                                            RICHARD T. HARRISON

                                            /s/  RICHARD T. HARRISON
                                            ------------------------------------

                                            PLEDGEE:

                                            VENTURE CATALYST INCORPORATED,
                                            a Utah corporation

                                            By: /s/ L. DONALD SPEER, II
                                               ---------------------------------
                                            L. Donald Speer, II
                                            Chairman of the Board and
                                            Chief Executive Officer

                                      -10-<PAGE>   1
                                                                    EXHIBIT 10.1

                               OPERATING AGREEMENT

                                       OF

                              CUSTOM NUTRITION, LLC

                      A DELAWARE LIMITED LIABILITY COMPANY

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<S>     <C>                                                                   <C>
1.      Definitions..........................................................  1

2.      The Company..........................................................  5

3.      Capital and Capital Contributions....................................  6

4.      Allocations and Distributions........................................  8

5.      Management........................................................... 13

6.      Accounts and Accounting.............................................. 15

7.      Membership-Meetings, Voting and Indemnity............................ 17

8.      Transfers of Membership Interests.................................... 19

9.      Dissolution and Winding Up........................................... 23

10.     Noncompetition, Confidentiality and Intellectual Property............ 24

11.     Indemnification and Arbitration...................................... 25

12.     Attorney-in-Fact and Agent........................................... 27

13.     General Provisions................................................... 27
</TABLE>

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                               OPERATING AGREEMENT
                                       FOR
                              CUSTOM NUTRITION, LLC

        This Agreement is made as effective as of the sixth day of December,
1999 by and among FitnessAge Incorporated, a Nevada corporation ("FitnessAge")
as one member, and Natural Alternatives International, Inc., a Delaware
corporation ("NAI") as the only other member. FitnessAge and NAI at times are
referred to hereafter as the "Parties." Both FitnessAge and NAI agree by
execution of this Agreement to form a limited liability company pursuant to the
provisions of this Agreement and the Delaware Limited Liability Company Act (the
"Act") (Del. Gen. Corp. Laws Ch. 18 et. seq.).

        A. The Parties have formed a limited liability company under the
Delaware Limited Liability Company Act. The Parties have caused a Certificate of
Formation to be filed with the Delaware Secretary of State on November 12, 1999
and the Certificate of Formation is hereby adopted and approved by the Parties.

        B. The Parties are entering into this Agreement to provide for the
governance of the limited liability company and the conduct of its business, and
to specify their relative rights and obligations.

        NOW THEREFORE, the Members agree as follows:

                             ARTICLE I: DEFINITIONS

        Capitalized terms used in this Agreement have the meanings specified in
this Article or elsewhere in this Agreement and when not so defined shall have
the meanings set forth in the Delaware General Corporations Law Chapter 18 et
seq.

        1.1 "ACT" means the Delaware Limited Liability Company Act (Del. Gen.
Corp. Laws Ch. 18 et. seq.)., including amendments from time to time.

        1.2 "ADJUSTED CAPITAL CONTRIBUTION" is defined in Article IV, Section
4.6(a).

        1.3 "ADJUSTED CAPITAL ACCOUNT DEFICIT" is defined in Article IV, Section
4.3(a).

        1.4 "AFFILIATE" of a Member means any Person directly or indirectly,
through one or more intermediaries, controlling, controlled by, or under common
control with the Member. The term "control" (including the terms "controlled by"
and "under common control with") means the possession, direct or indirect, of
the power to direct or cause the direction of the management and policies of a
Person, whether through membership, ownership of voting securities, by contract,
or otherwise.

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<PAGE>   4

        1.5 "AGREEMENT" means this operating agreement, as originally executed
and as amended from time to time.

        1.6 "ASSIGNEE" means a person who has acquired a Member's Economic
Interest in the Company, by way of a Transfer in accordance with the terms of
this Agreement, but who has not become a Member.

        1.7 "ASSIGNING MEMBER" means a Member who by means of a Transfer has
transferred an Economic Interest in the Company to an Assignee.

        1.8 "AVAILABLE CASH" means all gross revenues from the Company's
operations, including gross proceeds from all sales, financings, and other
dispositions of Company property less only: (i) payments made to NAI pursuant to
the Exclusive Manufacturing Agreement of even date herewith; (ii) all amounts
paid to FitnessAge Affiliates, licensees, franchisees, distributors and dealers
as commission or other compensation specifically attributable to sales of
nutrition products purchased from and manufactured by NAI or others; and (iii)
amounts paid pursuant to the approved budget of general and administrative
expenses of the Company as shown in Exhibit "B" attached hereto and incorporated
herein by this reference.

        1.9 "BOOK DEPRECIATION" is defined in Article IV, Section 4.3(b).

        1.10 "BUDGET" means the annual operating budget of the Company as
provided for herein. The Budget for the current fiscal year shall constitute
Exhibit B to the Agreement and shall be deemed incorporated herein.

        1.11 "CAPITAL ACCOUNT" means, with respect to any Member, the account
reflecting the capital interest of the Member in the Company, consisting of the
Member's initial Capital Contribution maintained and adjusted in accordance with
Article III, Section 3.4.

        1.12 "CAPITAL CONTRIBUTION(S)" means, with respect to any Member, the
amount of the money and the Fair Market Value of any property (other than money)
contributed to the Company (net of liabilities secured by such contributed
property that the Company is considered to assume or take "subject to" under IRC
section 752) in consideration of a Percentage Interest held by such Member. A
loan to the Company from a Member or its Affiliate shall not be deemed a Capital
Contribution, and a Capital Contribution shall not be deemed a loan.

        1.13 "CAPITAL EVENT" means a sale or disposition of any of the Company's
capital assets, the receipt of insurance and other proceeds derived from the
involuntary conversion of Company property, the receipt of proceeds from a
refinancing of Company property, or a similar event with respect to Company
property or capital assets.

        1.14 "CERTIFICATE OF FORMATION" is defined in Corporations Law section
18-201, as applied to this Company.

                                       2
<PAGE>   5

        1.15 "CODE" or "IRC" means the Internal Revenue Code of 1986, as
amended, and any successor statutory provisions.

        1.16 "COMPANY" means the company named in Article II, Section 2.1 of
this Agreement.

        1.17 "COMPANY MINIMUM GAIN" is defined in Article IV, Section 4.3(c).

        1.18 "CONFIDENTIAL INFORMATION" is defined in Article X, Section 10.3.

        1.19 "CORPORATIONS LAW" ("CORP. LAW") means the Delaware General
Corporations Law.

        1.20 "ECONOMIC INTEREST" means a Person's right to share in the income,
gains, losses, deductions, credit or similar items of, and to receive
distributions from, the Company, but does not include any other rights of a
Member, including the right to vote or to participate in management.

        1.21 "ENCUMBER" means the act of creating or purporting to create an
Encumbrance, whether or not perfected under applicable law.

        1.22 "ENCUMBRANCE" means, with respect to any Membership Interest, or
any element thereof, a mortgage, pledge, security interest, lien, proxy coupled
with an interest (other than as contemplated in this Agreement), option, or
preferential right to purchase.

        1.23 "GENERAL MANAGER" means the Person appointed as the General Manager
by the Members as set forth in Article II or the Persons who from time to time
succeed any Person as the General Manager and who, in either case, is serving at
the relevant time as the General Manager.

        1.24 "GROSS ASSET VALUE" means, with respect to any item of property of
the Company, the item's adjusted basis for federal income tax purposes, except
as follows:

               (a) The initial Gross Asset Value of any item of property
contributed by a Member to the Company shall be the fair market value of such
property, as mutually agreed by the contributing Member and the Company;

               (b) The Gross Asset Value of any item of Company property
distributed to any Member shall be the fair market value of such item of
property on the date of distribution; and

               (c) The Gross Asset Value of any item of Company property shall
be subject to the adjustments specified in Article IV, Section 4.11.

        1.25 "INCOME" and "LOSSES" are defined in Article IV, Section 4.2.

        1.26 "INVOLUNTARY TRANSFER" means, with respect to any Membership
Interest, or any element thereof, any Transfer or Encumbrance, whether by
operation of law, pursuant to court order, foreclosure of a security interest,
execution of a judgment or other legal process, or otherwise,

                                       3
<PAGE>   6

including a purported transfer to or from a trustee in bankruptcy, receiver, or
assignee for the benefit of creditors.

        1.27 "LOSSES." See Article IV, Section 4.2.

        1.28 "MEMBER" means a Member, including the General Manager, admitted to
the Company or a Person who otherwise acquires a Membership Interest, as
permitted under this Agreement, and who remains a Member. A list of the names,
addresses, initial Capital Contribution and Percentage Interest of the Members
is set forth at Exhibit "A" attached hereto and made a part hereof. The initial
Members are FitnessAge and NAI.

        1.29 "MEMBER APPROVAL" means the approval or consent of Member or
Members whose Percentage Interests represent the Percentage Interests of all the
Members required for a given action.

        1.30 "MEMBER NONRECOURSE DEBT" is defined in Article IV, Section 4.3(d).

        1.31 "MEMBER NONRECOURSE DEBT MINIMUM GAIN" is defined in Article IV,
Section 4.3(e).

        1.32 "MEMBER NONRECOURSE DEDUCTIONS" is defined in Article IV, Section
4.3(f).

        1.33 "MEMBERSHIP INTEREST(S)" means a Member's rights in the Company,
collectively, including the Member's Economic Interest, any right to vote or
participate in management, and any right to information concerning the business
and affairs of the Company.

        1.34 "NONRECOURSE DEDUCTIONS" is defined in Article IV, Section 4.3(g).

        1.35 "NONRECOURSE LIABILITY" is defined in Article IV, Section 4.3(h).

        1.36 "NOTICE" means a written notice required or permitted under this
Agreement. A notice shall be deemed given or sent when personally delivered to
the recipient; or on the business day following the date it was deposited, for
overnight delivery, postage and fees prepaid, in the United States mail; or when
delivered to Federal Express, United Parcel Service, DHL WorldWide Express, or
Airborne Express, for overnight delivery, charges prepaid or charged to the
sender's account.

        1.37 "NUTRITIONAL PRODUCT" or "PRODUCT" means any nutrition product,
nutritional or dietary supplement or related materials, nutritional food or
other nutritional products of any description, including but not limited to
nutritional products in the form of capsules, tablets, powders, liquids, bars
and other forms and whether packaged in any and all manners.

        1.38 "PERCENT OF THE MEMBERS" means the specified total of Percentage
Interests of all the Members.

        1.39 "PERCENTAGE INTEREST(S)" means the percentage interest set forth
opposite the Member's name at Exhibit "A" attached hereto.

                                       4
<PAGE>   7

        1.40 "PERSON" means an individual, partnership, limited partnership,
trust, estate, association, corporation, limited liability company, or other
entity, whether domestic or foreign.

        1.41 "REGULATIONS" means the income tax regulations promulgated by the
United States Department of the Treasury and published in the Federal Register
for the purpose of interpreting and applying the provisions of the Code, as such
regulations may be amended from time to time, including corresponding provisions
of applicable successor regulations.

        1.42 "RESERVES" means the aggregate of reserve accounts the Members
collectively deem necessary to meet accrued or contingent liabilities of the
Company, reasonably anticipated operating expenses, and working capital
requirements.

        1.43 "SUCCESSOR IN INTEREST" means an Assignee, a successor of a Person
by merger or otherwise by operation of law, or a transferee of all or
substantially all of the business or assets of a Person.

        1.44 "TAX ITEM" means each item of income, gain, loss, deduction, or
credit of the Company for federal income tax reporting purposes.

        1.45 "TAX MATTERS MEMBER" means such Person as may be designated under
Article VI, Section 6.6.

        1.46 "TRANSFER" means, with respect to a Membership Interest or any
element of a Membership Interest, any sale, assignment, gift, Involuntary
Transfer, Encumbrance, or other disposition of such Membership Interest or any
element of such Membership Interest, directly or indirectly, other than an
Encumbrance that is expressly permitted under this Agreement.

        1.47 "TRIGGERING EVENT" is defined in Article VIII, Section 8.5.

        1.48 "VOTE" means a written consent or approval, a ballot cast at a
meeting, or a voice vote taken at a meeting.

        1.49 "VOTING INTEREST" means, with respect to a Member, the right to
Vote or participate in management and any right to information concerning the
business and affairs of the Company provided under the Act, except as limited by
the provisions of this Agreement. A Member's Voting Interest shall be equal to
that Member's Percentage Interest.

                             ARTICLE II: THE COMPANY

        2.1 The name of the Company is CUSTOM NUTRITION, LLC.

        2.2 The principal executive office of the Company shall be at 4250
Executive Square, Suite 101, La Jolla, California 92037, or such other place or
places as may be determined by the Members from time to time.

                                       5
<PAGE>   8

        2.3 The initial agent for service of process on the Company shall be the
Corporation Trust Company, whose address is the Corporation Trust Company, 1209
Orange Street, Wilmington, Delaware 19801.

        2.4 This Company has been formed for the purpose of developing,
merchandising, selling and distributing nutritional and related products
designed, manufactured and produced by NAI or others for sale by the Company
throughout the world, together with such other activities as may be necessary or
advisable in connection with the purposes set forth herein. The Members
understand and acknowledge that although FitnessAge shall be subject to the
covenants set forth in Article X hereinbelow and in the License Agreement by and
between Fitness Age and the Company, FitnessAge affiliates, licensees,
distributors, sales representatives or dealers are independent contractors, and
may choose to purchase or acquire nutritional and related products from
suppliers other than the Company.

        2.5 The Members intend the Company to be a limited liability company
under the Act. No Member shall take any action inconsistent with the express
intent of this Agreement.

        2.6 The term of existence of the Company shall commence on the effective
date of filing of the Certificate of Formation with the Delaware Secretary of
State, and shall continue until December 31, 2009, unless sooner terminated by
the provisions of this Agreement, extended by agreement of the Members, or as
provided by law.

        2.7 APPOINTMENT OF GENERAL MANAGER: The Members may by mutual consent
appoint a person to act as the General Manager of the Company at any time or
from time to time. If there is no Person acting as the General Manager at any
time the business of the Company shall be managed by the Members acting jointly.
The Members hereby appoint FitnessAge to act as the General Manager only until
January 5, 2000. Thereafter, unless a successor General Manager is appointed by
the joint act of both Members, the business of the Company shall be managed by
the Members acting jointly.

                 ARTICLE III: CAPITAL AND CAPITAL CONTRIBUTIONS

        3.1 Each Member shall contribute to the capital of the Company as the
Member's initial Capital Contribution the amounts specified in Exhibit "A"
attached hereto.

        3.2 If either Member is at any time of the opinion that Capital
Contributions in addition to the Members' initial Capital Contributions are
needed to enable the Company to conduct its business, that Member shall give
notice to the other Member that it believes such funds are needed. The Members
shall meet and confer regarding the operating budget for the Company and the
need (if any) for additional Capital Contributions. If the Members agree upon
the need for and the amount of additional Capital Contributions required each
Member shall contribute additionally required capital to the Company in cash in
an amount equal to the Member's Percentage Interest of the total additional
capital that has been agreed to. No Member may voluntarily make any additional
Capital Contribution to the Company without the consent of the other Member.

                                       6
<PAGE>   9

        3.3 If a Member fails to make an additional Capital Contribution
required under Section 3.2 above within 30 days after it is required to be made
(a "Defaulting Member"), the other member (the "Nondefaulting Member") may make
an additional Capital Contribution up to the total amount required of the
Defaulting Member (the "Additional Capital Shortfall"). Any amount of Additional
Capital Shortfall, which a Nondefaulting Member so advances on behalf of a
Defaulting Member, shall become a loan due and owing from the Defaulting Member
of such Nondefaulting Member and shall bear interest at the rate of five percent
(5%) above the then current prime rate, as most recently reported by the Western
Edition of the Wall Street Journal, or the highest rate allowed by law,
whichever is less, compounded monthly. All distributions otherwise to be made to
the Defaulting Member under this Agreement shall instead be paid on behalf of
the Defaulting Member to the Nondefaulting Member until such advances and
interest thereon are paid in full. In any event, any such advances shall be due
and payable by the Defaulting Member one (1) year from the date that such
advance was made. Any amounts repaid shall first be applied to interest and
thereafter to principal. Each Defaulting Member grants to the Nondefaulting
Member who advances funds under this Section 3.3 a security interest in its
Membership Interest to secure its obligation to repay such advances and agrees
to execute and deliver a promissory note as described herein together with a
security agreement in a form reasonably acceptable to the Nondefaulting Member
and such UCC-1 financing statements and assignments of certificates of
membership (or other documents of transfer) as the Nondefaulting Member making
such advances may reasonably request.

        3.4 An individual Capital Account for each Member shall be maintained in
accordance with the requirements of Regulations Section 1.704-1(b)(2)(iv) and
adjusted in accordance with the following provisions:

               (a) A Member's Capital Account shall be increased by that
Member's Capital Contributions, that Member's share of profits, and any Tax
Items in the nature of income or gain that are specially allocated to that
Member pursuant to Article IV.

               (b) A Member's Capital Account shall be increased by the amount
of any Company liabilities assumed by that Member subject to and in accordance
with the provisions of Regulations Section 1.704-1(b)(2)(iv)(c).

               (c) A Member's Capital Account shall be decreased by (a) the
amount of cash distributed to that Member; (b) the Fair Market Value of any
property of the Company so distributed, net of liabilities secured by such
distributed property that the distributee Member is considered to assume or to
be subject to under IRC section 752; and (c) the amount of any items in the
nature of expenses or losses that are specially allocated to that Member
pursuant to Article IV.

               (d) A Member's Capital Account shall be reduced by the Member's
share of any expenditures of the Company described in IRC section 705(a)(2)(B)
or which are treated as IRC section 705(a)(2)(B) expenditures pursuant to
Regulations Section 1.704-1(b)(2)(iv)(i) (including syndication expenses and
losses nondeductible under IRC sections 267(a)(1) or 707(b)).

                                       7
<PAGE>   10

               (e) If any Economic Interest (or portion thereof) is transferred
in conformance with and not otherwise in violation of this Agreement, the
transferee of such Economic Interest or portion shall succeed to the
transferor's Capital Account attributable to such interest or portion.

               (f) The principal amount of a promissory note that is not readily
traded on an established securities market and that is contributed to the
Company by the maker of the note shall not be included in the Capital Account of
any Person until the Company makes a taxable disposition of the note or until
(and to the extent) principal payments are made on the note, all in accordance
with Regulations Section 1.704-1(b)(2)(iv)(d)(2).

               (g) Each Member's Capital Account shall be increased or decreased
as necessary to reflect a revaluation of the Company's property assets in
accordance with the requirements of Regulations Section 1.704-1(b)(2)(iv)(f) and
1.704-1(b)(2)(iv)(g), including the special rules under Regulations Section
1.701-1(b)(4), as applicable. The provisions of this Agreement concerning the
maintenance of Capital Accounts are intended to comply with Regulations Section
1.704-1(b) and shall be interpreted and applied in a manner consistent with
those Regulations.

        3.5 A Member shall not be entitled to withdraw any part of the Member's
Capital Contribution or to receive any distributions, whether of money or
property, from the Company except as provided in this Agreement.

        3.6 No interest shall be paid on Capital Contributions or on the balance
of a Member's Capital Account.

        3.7 A Member shall not be bound by, or be personally liable for, the
expenses, liabilities, or obligations of the Company except as otherwise
provided in the Act or in this Agreement.

        3.8 Except as otherwise expressly provided in this Agreement, no Member
shall have priority over any other Member with respect to the return of a
Capital Contribution or distributions or allocations of income, gain, losses,
deductions, credits, or items thereof.

                    ARTICLE IV: ALLOCATIONS AND DISTRIBUTIONS

        4.1 The Income and Losses of the Company and all items of Company
income, gain, loss, deduction, or credit shall be allocated, for Company book
purposes and for tax purposes, to a Member in accordance with the Member's
Percentage Interest.

        4.2 As used in this Agreement, "Income and Losses" means, for each
fiscal year or other period specified in this Agreement, an amount equal to the
Company's taxable income or loss for such year or period, determined in
accordance with IRC section 703(a), including all Tax Items required to be
stated separately pursuant to IRC section 703(a)(1), with the following
adjustments:

               (a) Any income of the Company that is exempt from federal income
tax and not otherwise taken into account in computing Income or Losses shall be
added to such taxable income or loss;

                                       8
<PAGE>   11

               (b) Any expenditures of the Company described in IRC section
705(a)(2)(B) or treated as IRC section 705(a)(2)(B) expenditures pursuant to
Regulations Section 1.704-1(b)(2)(iv)(i) and not otherwise taken into account in
computing Income or Losses shall be subtracted from such taxable income or shall
increase such loss; and

               (c) Notwithstanding the foregoing provisions of this Section 4.2,
any items of income, gain, loss, or deduction that are specially allocated
hereafter shall not be taken into account in computing Income or Losses under
Section 4.1.

        4.3 The following definitions shall apply with respect to this Article
IV.

               (a) "Adjusted Capital Account Deficit" means, with respect to any
Member, the deficit balance, if any, in such Member's Capital Account as of the
end of the relevant fiscal year of the Company, after such Member's Capital
Account has been adjusted as follows: (1) the Member's Capital Account shall be
increased by the amount of such Member's share of Company Minimum Gain and
Member Nonrecourse Debt Minimum Gain; and (2) the Member's Capital Account shall
be decreased by the amount of the items described in Regulations Section
1.704-1(b)(2)(ii)(d)(4), (5), and (6). This definition of Adjusted Capital
Account Deficit is intended to comply with the provisions of Regulations Section
1.704-1(b)(2)(ii)(d) and shall be interpreted consistently with that Regulation.

               (b) "Book Depreciation" means, with respect to any item of
Company property for a given fiscal year, a percentage of depreciation or other
cost recovery deduction allowable for federal income tax purposes for such item
during that fiscal year equal to the result (expressed as a percentage) obtained
by dividing (1) the Fair Market Value of that item at the beginning of the
fiscal year (or the acquisition date during the fiscal year), by (2) the federal
adjusted tax basis of the item at the beginning of the fiscal year (or the
acquisition date during the fiscal year). If the adjusted tax basis of an item
is zero, the Members by mutual consent may determine Book Depreciation.

               (c) "Company Minimum Gain" has the meaning set forth in
Regulations Section 1.704-2(d)(1).

               (d) "Member Nonrecourse Debt" is defined in Regulations Section
1.704-2(b)(4).

               (e) "Member Nonrecourse Debt Minimum Gain" for a fiscal year of
the Company means the net increase in Minimum Gain attributable to Member
Nonrecourse Debt, determined as set forth in Regulations Section 1.704-2(i)(2).

               (f) "Member Nonrecourse Deductions" has the meaning set forth in
Regulations Section 1.704-2(i)(2). For any fiscal year of the Company, the
amount of Member Nonrecourse Deductions with respect to a Member Nonrecourse
Debt equals the net increase during that fiscal year in Member Nonrecourse Debt
Minimum Gain attributable to such Member Nonrecourse Debt during that fiscal
year, reduced (but not below zero) by the amount of any distributions during
such year to the Member bearing the economic risk of loss for such Member
Nonrecourse Debt if such distributions are both from the proceeds of such Member
Nonrecourse Debt and are allocable to an

                                       9
<PAGE>   12

increase in Member Nonrecourse Debt Minimum Gain attributable to such Member
Nonrecourse Debt, all as determined according to the provisions of Regulations
Section 1.704-2(i)(2). In determining Member Nonrecourse Deductions, the
ordering rules of Regulations Section 1.704-2(j) shall be followed.

               (g) "Nonrecourse Deductions" has the meaning set forth in
Regulations Section 1.704-2(c). The amount of Nonrecourse Deductions for a
Company fiscal year equals the net increase in the amount of Company Minimum
Gain during that fiscal year, reduced (but not below zero) by the aggregate
amount of any distributions during that fiscal year of proceeds of a Nonrecourse
Liability that are allocable to an increase in Company Minimum Gain.

               (h) "Nonrecourse Liability" is defined in Regulations Section
1.752-1(a)(2).

        4.4 The following special allocations shall be made in the following
order:

               (a) Company Minimum Gain Chargeback. If there is a net decrease
in Company Minimum Gain during a fiscal year, each Member shall be allocated,
before any other allocation under this Section, items of Company income and gain
for such fiscal year equal to such Member's share of the net decrease in Company
Minimum Gain as determined in accordance with Regulations Section 1.704-2(g)(2).

               (b) Member Nonrecourse Debt Minimum Gain Chargeback. If there is
a net decrease in Member Nonrecourse Debt Minimum Gain during a fiscal year, any
Member with a share of the Member Nonrecourse Debt Minimum Gain attributable to
such Member Nonrecourse Debt as of the beginning of such fiscal year shall be
allocated items of Company income and gain for such year (and, if necessary,
subsequent years) equal to that Member's share of the net decrease in Member
Nonrecourse Debt Minimum Gain. A Member's share of net decrease in Member
Nonrecourse Debt Minimum Gain shall be determined pursuant to Regulations
Section 1.704-2(g)(2). A Member shall not be subject to the foregoing chargeback
to the extent permitted under Regulations Section 1.704-2(i)(4).

               (c) Qualified Income Offset. If any Member unexpectedly receives
an adjustment, allocation or distribution described in Regulation sections
1.704-1(b)(2)(ii)(d)(4), (5), or (6), such Member shall be allocated items of
Company income and gain (consisting of a pro rata portion of each item of
Company income, including gross income and gain for such fiscal year) in an
amount and manner sufficient to eliminate the Adjusted Capital Account Deficit
created by such adjustment, allocation, or distribution.

        4.5 Member Nonrecourse Deductions for any fiscal year of the Company
shall be allocated to the Members in the same proportion as Income is allocated
under Section 4.1, provided that any Member Nonrecourse Deductions for any
fiscal year or other period shall be allocated to the Member who bears (or is
deemed to bear) the economic risk of loss with respect to the Member Nonrecourse
Debt to which such Member Nonrecourse Deductions are attributable in accordance
with Regulations Section 1.704-2(i)(2).

                                       10
<PAGE>   13

        4.6 In any fiscal year of the Company, Income in excess of Losses of the
Company resulting from a Capital Event in that Fiscal Year shall be allocated to
the Members in the following order:

               (a) To Members whose Adjusted Capital Contributions are in excess
of their Capital Accounts, in proportion to those excesses, until all of those
excesses have been eliminated. "Adjusted Capital Contributions" means, with
respect to each Member, the excess of such Member's contribution to the capital
of the Company over all prior distributions to the Member that have resulted
from Capital Events.

               (b) Among the Members in the proportion that the Capital
Contribution of each Member bears to the total Capital Contributions of all
Members.

        4.7 In any fiscal year of the Company, Losses in excess of Income of the
Company, resulting from a Capital Event in that fiscal year, shall be allocated
to the Members with positive Capital Accounts, in proportion to their positive
Capital Account balances, until no Member has a positive Capital Account. For
this purpose, Capital Accounts shall be reduced by the adjustments set forth in
Regulation sections 1.704-1(b)(2)(ii)(d)(4), (5), and (6).

        4.8 Any unrealized appreciation or unrealized depreciation in the values
of Company property distributed in kind to Members shall be deemed to be Income
or Losses realized by the Company immediately prior to the distribution of the
property and such Income or Losses shall be allocated to the Capital Accounts in
the same proportions as Income are allocated under Section 4.1. Any property so
distributed shall be treated as a distribution to the Members to the extent of
the Fair Market Value of the property, less the amount of any liability secured
by and related to the property. Nothing contained in this Agreement is intended
to treat or cause such distributions to be treated as sales for value. For the
purposes of this Section 4.8, "unrealized appreciation" or "unrealized
depreciation" shall mean the difference between the Fair Market Value of such
property and the Company's federal adjusted tax basis for such property.

        4.9 Any item of income, gain, loss, or deduction with respect to any
property (other than cash) that has been contributed by a Member to the capital
of the Company, or that has been revalued pursuant to the provisions of Article
III, Section 3.4(g), and that is required or permitted to be allocated to such
Member for income tax purposes under IRC section 704(c) in order to take into
account the variation between the tax basis of such property and its Fair Market
Value at the time of its contribution, shall be allocated solely for income tax
purposes in the manner required or permitted under IRC section 704(c) using the
"traditional" method described in Regulations Section 1.704-3(b), except that
any other method allowable under applicable Regulations may be used for any
contribution of property with respect to which there is agreement among the
contributing Member and the other Member.

        4.10 In the case of a Transfer of an Economic Interest during any fiscal
year of the Company, the Assigning Member and Assignee shall each be allocated
Income or Losses based on the number of days each held the Economic Interest
during that fiscal year. If the Assigning Member and Assignee agree to a
different proration and advise the General Manager (or if there is

                                       11
<PAGE>   14

no General Manager, advise all the Members) of the agreed proration before the
date of the Transfer and the Transfer is made in conformance with and not
contrary to any provision of this Agreement, then Income or Losses from a
Capital Event during that fiscal year shall be allocated to the holder of the
Interest on the day such Capital Event occurred. If an Assignee makes a
subsequent Assignment, said Assignee shall be considered an "Assigning Member"
with respect to the subsequent Assignee for purposes of the aforesaid
allocations.

        4.11 (a) The Gross Asset Value of all Company property shall be adjusted
as of the following times: (1) the acquisition of an interest or additional
interest in the Company by any new or existing Member in exchange for more than
a de minimis Capital Contribution; (2) the distribution of money or other
property (other than a de minimis amount) by the Company to a Member as
consideration for an Economic Interest in the Company, and (3) the liquidation
of the Company within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g);
provided, however, that adjustments under clauses (1) and (2) above shall be
made only in the event of a revaluation of Company property under Article III,
Section 3.4(g) in accordance with Regulations Section 1.704- 1(b)(2)(iv)(f);

               (b) The Gross Asset Value of Company property shall be increased
or decreased to reflect adjustments to the adjusted tax basis of such property
pursuant to IRC section 732, IRC section 733, or IRC section 743, subject to the
limitations imposed by IRC section 755 and Regulations Section
1.704-1(b)(2)(iv)(m); and

               (c) If the Gross Asset Value of an item of property has been
determined or adjusted pursuant to Article I, Section 1.22 or Paragraph (a) or
(b) of this Section 4.11, such Gross Asset Value shall be adjusted by the Book
Depreciation, if any, taken into account with respect to such property for
purposes of computing Income and Losses.

        4.12 It is the intent of the Members that each Member's allocated share
of Company Tax Items be determined in accordance with this Agreement to the
fullest extent permitted by IRC sections 704(b) and 704(c). Notwithstanding
anything to the contrary contained in this Agreement, if the Company is advised
that, as a result of the adoption of new or amended regulations pursuant to IRC
sections 704(b) and 704(c), or the issuance of authorized interpretations, the
allocations provided in this Agreement are unlikely to be respected for federal
income tax purposes, the General Manager (or if there is no General Manager the
Members' by mutual determination) are granted the power to amend the allocation
provisions of this Agreement, on advice of accountants and legal counsel, to the
minimum extent necessary to cause such allocation provisions to be respected for
federal income tax purposes.

        4.13 All Available Cash, including revenues or proceeds from a Capital
Event or the dissolution of the Company, shall be distributed among the Members
in proportion to the Members' Percentage Interest. The parties intend that
Available Cash shall be distributed as soon as practicable following the General
Manager's determination (or if there is no General Manager the Members' mutual
determination) that such cash is available for distribution. The parties
acknowledge no assurances can be given with respect to when or whether said cash
will be available for distribution to the Members.

                                       12
<PAGE>   15

        4.14 If the proceeds from a sale or other disposition of an item of
Company property consist of property other than cash, the value of that property
shall be as determined by the agreement of the Members. If such noncash proceeds
are subsequently reduced to cash, such cash shall be taken into account by the
General Manager (or if there is no General Manager by the Members' mutual
determination) in determining Available Cash.

        4.15 Notwithstanding any other provisions of this Agreement to the
contrary, when there is a distribution in liquidation of the Company, or when
any Member's interest is liquidated, all items of income and loss first shall be
allocated to the Members' Capital Accounts under this Article IV, and other
credits and deductions to the Members' Capital Accounts shall be made before the
final distribution is made. The final distribution to the Members shall be made
as provided in Article IX, Section 9.2(e) of this Agreement. The provisions of
this Section 4.15 and Article IX, Section 9.2(e) shall be construed in
accordance with the requirements of Regulations Section 1.704-1(b)(2)(ii)(b)(2).

                              ARTICLE V: MANAGEMENT

        5.1 The business of the Company shall be managed by the General Manager
(or if there is no General Manager by the Members' acting jointly) or any
successors, selected as provided in Section 5.2. Except as otherwise provided in
this Agreement, all decisions concerning the management of the Company's
business shall be made by the General Manager, who shall have all power and
authority to act on behalf of the Company and manage its business (or if there
is no General Manager such decisions shall be made by the Members' mutual
determination) .

        5.2 The General Manager (or if there is no General Manager by the
Members' mutual determination) shall serve until the earlier of: (1) the term of
the General Manager's appointment set by the Members mutual determination at any
time; (2) the General Manager's resignation, retirement, death, dissolution,
bankruptcy or disability; or (3) the General Manager's removal by the Members. A
substitute General Manager may be appointed by the unanimous approval of the
Members on the occurrence of any of the foregoing events.

        5.3 A General Manager may be removed with or without cause at any time
by action of Members holding at least 67% of Membership Interests.

        5.4 The General Manager shall not take any of the following actions on
behalf of the Company without the consent of all of the Members.

               (a) The imposition of additional Capital Contributions on the
Members;

               (b) Any action that would exceed the Budget or any line item in
the Budget by more than fifteen percent (15%);

               (c) Develop or sell any new or materially modified Nutritional
Product;

                                       13
<PAGE>   16

               (d) Any act that would make it impossible to carry on the
ordinary business of the Company;

               (e) Any confession of a judgment against the Company;

               (f) The dissolution of the Company except as provided for herein;

               (g) The disposition of all or a substantial part of the Company's
assets not in the ordinary course of business;

               (h) The transfer of an Economic Interest or a Membership Interest
and the admission of an Assignee as a Member of the Company;

               (i) The entering into, on behalf of the Company, of any
transaction constituting a reorganization;

               (j) Change the Company's auditor; and

               (i) Make any amendment of the Certificate of Formation or this
Agreement.

        5.5 The General Manager will be entitled to such compensation for acting
as the General Manager as the Members may mutually determine.

        5.6 The General Manager shall be reimbursed for all expenses reasonably
incurred by him/her in connection with his/her management duties, provided that
such expense would qualify pursuant to the Code as an item of deduction from
gross revenue of the Company in computing the Company's taxable income, if such
expense were incurred directly by the Company.

        5.7 The General Manager shall cause all assets of the Company, whether
real or personal, to be held in the name of the Company.

        5.8 All funds of the Company shall be deposited in one or more accounts
with one or more recognized financial institutions in the name of the Company,
at such locations located in the United States as shall be mutually determined
by the Members. Withdrawal from such accounts shall require only the signature
of the General Manager or such other person or persons as the Members may
mutually designate.

        5.9 Prior to the execution of this Agreement, and at least sixty (60)
days prior to the end of each fiscal year of the Company, the Members shall meet
and confer to develop, document and approve a detailed operating Budget for the
Company for the remainder of the initial fiscal year and the next succeeding
fiscal year of the Company. The Members may meet and confer and approve
modifications to the Budget from time to time in their respective discretion.
The General Manager shall operate the Company in accordance with the Budget for
the fiscal year.

                                       14
<PAGE>   17

               The approved Budget for the current fiscal year shall constitute
Exhibit B to this Agreement and shall be incorporated herein without further
action.

                       ARTICLE VI: ACCOUNTS AND ACCOUNTING

        6.1 Complete books of account of the Company's business, in which each
Company transaction shall be fully and accurately entered, shall be kept at the
Company's principal executive office and at such other locations as the Members
may mutually determine from time to time and shall be open to inspection and
copying on reasonable Notice by any Member or the Member's authorized
representatives during normal business hours. The costs of such inspection and
copying shall be borne by the Member.

        6.2 Financial books and records of the Company shall be kept on the
accrual method of accounting, which shall be the method of accounting followed
by the Company for federal income tax purposes. The financial statements of the
Company shall be prepared in accordance with generally accepted accounting
principles and shall be appropriate and adequate for the Company's business and
for carrying out the provisions of this Agreement. The fiscal year of the
Company shall be January 1 through December 31.

        6.3 At all times during the term of existence of the Company, and beyond
that term if the Members deem it necessary, the General Manager (or if there is
no General Manager the Members) shall keep or cause to be kept the books of
account referred to in Section 6.2, together with:

               (a) A current list of the full name and last known business or
residence address of each Member, together with the Capital Contribution and the
share in Income and Losses of each Member;

               (b) A current list of the full name and business or residence
address of the General Manager;

               (c) A copy of the Certificate of Formation, as amended;

               (d) Copies of the Company's federal, state, and local income tax
or information returns and reports, if any, for the six most recent taxable
years;

               (e) An original executed copy or counterparts of this Agreement,
as amended;

               (f) Any powers of attorney under which the Certificate of
Formation or any amendments to said articles were executed;

               (g) Financial statements of the Company for the six most recent
fiscal years;

               (h) The books and Records of the Company as they relate to the
Company's internal affairs for the current and past four fiscal years; and

                                       15
<PAGE>   18

               (i) The Approved Budget for the current fiscal year as amended to
date, and each Approved Budget and approved amended budget for the previous four
(4) fiscal years.

        If the General Manager deems (or if there is no General Manager the
Members' mutual determine) that any of the foregoing items shall be kept beyond
the term of existence of the Company, the repository of said items shall be as
designated by the General Manager (or if there is no General Manager by the
Members' mutual determination).

        6.4 At the end of each fiscal year the books of the Company shall be
closed and examined and statements reflecting the financial condition of the
Company and its Income or Losses shall be prepared, and an audit report thereon
shall be issued by the Company's auditor who shall be one of the ten largest
international firms of certified public accountants. The initial auditor for the
Company shall be Ernst & Young. Copies of the financial statements shall be
given to all Members. In addition, all Members shall receive not less frequently
than 30 days after the end of each month, copies of such financial statements
regarding the previous month, as may be prepared in the ordinary course of
business, by the General Manager or accountants selected by the General Manager
(or if there is no General Manager by the Members' mutual determination) . The
General Manager shall deliver to each Member, within 75 days after the end of
the fiscal year of the Company, an audited financial statement that shall
include:

               (a) A balance sheet and income statement, and a statement of
changes in the financial position of the Company as of the close of the fiscal
year;

               (b) A statement showing the Capital Account of each Member as of
the close of the fiscal year and the distributions, if any, made to each Member
during the fiscal year.

        6.5 Within 75 days after the end of each taxable year of the Company the
General Manager shall send to each of the Members all information necessary for
the Members to complete their federal and state income tax or information
returns and a copy of the Company's federal, state, and local income tax or
information returns for such year.

        6.6 FitnessAge shall act as Tax Matters Member ("Partner") of the
Company pursuant to IRC section 6231(a)(7).

        6.7 The Tax Matters Member ("Partner") is hereby authorized to do the
following:

               (a) Keep the Members informed of administrative and judicial
proceedings for the adjustment of Company items (as defined in IRC section
6231(a)(3)) at the Company level, as required under IRC section 6223(g) and the
implementing Regulations;

               (b) Enter into settlement agreements under IRC section 6224(c)(3)
and applicable Regulations with the Internal Revenue Service or the Secretary of
the Treasury (the Secretary) with respect to any tax audit or judicial review,
in which agreement the Tax Matters Member may expressly state that such
agreement shall bind the other Members, except that such settlement agreement
shall not bind any Member who (within the time prescribed under the Code and

                                       16
<PAGE>   19

Regulations) files a statement with the Secretary providing that the Tax Matters
Member shall not have the authority to enter into a settlement agreement on
behalf of such Member;

               (c) On receipt of a notice of a final Company administrative
adjustment, to file a petition for readjustment of the Company items with the
Tax Court, the District Court of the United States for the district in which the
Company's principal place of business is located, or the United States Court of
Federal Claims, all as contemplated under IRC section 6226(a) and applicable
Regulations;

               (d) File requests for administrative adjustment of Company items
on Company tax returns under IRC section 6227(b) and applicable Regulations;
and, to the extent such requests are not allowed in full, file a petition for
adjustment with the Tax Court, the District Court of the United States for the
district in which the Company's principal place of business is located, or the
United States Court of Federal Claims, all as contemplated under IRC section
6228(a); and

               (e) To take any other action on behalf of the Members or the
Company in connection with any administrative or judicial tax proceeding to the
extent permitted by law or regulations, including retaining tax advisers (at the
expense of the Company) to whom the Tax Matters Member may delegate such rights
and duties as deemed necessary and appropriate.

                        ARTICLE VII: MEMBERSHIP MEETINGS,
                              VOTING AND INDEMNITY

        7.1 There shall be only one class of membership and no Member shall have
any rights or preferences in addition to or different from those possessed by
any other Member. Members shall agree on matters with respect to which this
Agreement or the Act requires or permits Member Approval. Each Member shall Vote
in proportion to the Member's Percentage Interest as of the governing record
date, determined in accordance with Section 7.2. If a Member with the consent of
the other Member(s) has assigned all or part of the Member's Economic Interest
to a person who has not been admitted as a Member, the Assigning Member shall
Vote in proportion to the Percentage Interest that the Assigning Member would
have had, if the assignment had not been made.

        7.2 The record date for determining the Members entitled to receive
Notice of any meeting, to Vote, to receive any distribution, or to exercise any
right in respect of any other lawful action, shall be the date set by the
General Manager (or if there is no General Manager by the Members' mutual
determination), provided that such record date shall not be more than 60, or
less than ten calendar days prior to the date of the meeting and not more than
60 calendar days prior to any other action.

        7.3 Meetings of the Members may be called at any time by the General
Manager, or by Members representing more than 30% of the Membership Interests
for the purpose of addressing any matters on which the Members may Vote. If a
meeting of the Members is called by the Members, Notice of the call shall be
delivered to the General Manager. Meetings may be held at the principal
executive office of the Company or at such other location as may be designated
by the General

                                       17
<PAGE>   20

Manager. Following the call of a meeting, the General Manager shall give Notice
of the meeting not less than ten, or more than 60 calendar days prior to the
date of the meeting to all Members entitled to Vote at the meeting. The Notice
shall state the place, date, and hour of the meeting and the general nature of
business to be transacted. No other business may be transacted at the meeting. A
quorum at any meeting of Members shall consist of no less than 67% of the
Percentage Interests of all Members, represented in person or by Proxy. The
Members present at a duly called or held meeting at which a quorum is present
may continue to transact business until adjournment, notwithstanding the
withdrawal of a sufficient number of Members to leave less than a quorum, if the
action taken, other than adjournment, is approved by the requisite percentage of
Membership Interests as specified in this Agreement or if not specified in this
Agreement as specified in the Act.

        7.4 A meeting of Members at which a quorum is present may be adjourned
to another time or place and any business which might have been transacted at
the original meeting may be transacted at the adjourned meeting. If a quorum is
not present at an original meeting, that meeting may be adjourned by the Vote of
a majority of Membership Interests represented either in person or by proxy.
Notice of the adjourned meeting need not be given to Members entitled to Notice
if the time and place of the adjourned meeting are announced at the meeting at
which the adjournment is taken, unless (a) the adjournment is for more than 45
days, or (b) after the adjournment, a new record date is fixed for the adjourned
meeting. In the situations described in clauses (a) and (b), Notice of the
adjourned meeting shall be given to each Member of record entitled to Vote at
the adjourned meeting.

        7.5 The transactions of any meeting of Members, however called and
noticed, and wherever held, shall be as valid as though consummated at a meeting
duly held after regular call and notice, if (a) a quorum is present at that
meeting, either in person or by Proxy, and (b) either before or after the
meeting, each of the persons entitled to Vote, not present in person or by
Proxy, signs either a written waiver of notice, a consent to the holding of the
meeting, or an approval of the minutes of the meeting. Attendance of a Member at
a meeting shall constitute waiver of notice, unless that Member objects, at the
beginning of the meeting, to the transaction of any business on the ground that
the meeting was not lawfully called or convened. Attendance at a meeting is not
a waiver of any right to object to the consideration of matters required to be
described in the notice of the meeting and not so included, if the objection is
expressly made at the meeting.

        7.6 At all meetings of Members, a Member may Vote in person or by Proxy.
Such Proxy shall be filed with the General Manager (or if there is no General
Manager with each Member) before or at the time of the meeting, and may be filed
by facsimile transmission to the General Manager at the principal executive
office of the Company at their principal place of business (or if there is no
General Manager to each Member) or such other address as may be given by the
General Manager to the Members for such purposes.

        7.7 Members may participate in a meeting through use of conference
telephone or similar communications equipment, provided that all Members
participating in such meeting can hear one another. Such participation shall be
deemed attendance at the meeting.

                                       18
<PAGE>   21

        7.8 Any action that may be taken at any meeting of the Members may be
taken without a meeting if a consent in writing, setting forth the action so
taken, is signed by Members holding at least the required percentage of the
Membership Interests that would be required for such action if taken at a
meeting of the Members. If the Members are requested to consent to a matter
without a meeting, each Member shall be given notice of the matter to be voted
upon in the manner described in Section 7.4.

        7.9 No Member acting solely in the capacity of a Member is an agent of
the Company, nor can any Member acting solely in the capacity of a Member bind
the Company or execute any instrument on behalf of the Company. Accordingly,
each Member shall indemnify, defend, and save harmless each other Member and the
Company from and against any and all loss, cost, expense, liability or damage
arising from or out of any claim based upon any action by such Member in
contravention of the first sentence of this Section 7.9.

                 ARTICLE VIII: TRANSFERS OF MEMBERSHIP INTERESTS

        8.1 A Member may not withdraw from the Company without the written
consents of the remaining Members. Withdrawal shall not release a Member from
any obligations and liabilities under this Agreement accrued or incurred prior
to the effective date of withdrawal. A withdrawing Member shall have only the
rights of a holder of an Economic Interest in the Company in respect of the
Member's Membership Interest in the Company. Unless all remaining Members
consent to such withdrawal, the withdrawing Member shall not be entitled to a
distribution of its Economic Interest until the dissolution and liquidation of
the Company. For purposes of this Section 8.1, the term "Economic Interest"
shall not mean or include any right to share in the income, gains, losses,
deductions, credits, or similar items of the Company attributable to any period
following withdrawal, or any right to information concerning the business and
affairs of the Company.

        8.2 In the event that FitnessAge is acquired through a sale of its
shares or substantially all of its assets to another person or entity (the
"Acquiring Entity"), NAI shall have the right to put its percentage interest in
the Company to FitnessAge. The purchase price for NAI's interest shall be based
on that amount that the Acquiring Entity is paying to FitnessAge for its
interest in the Company. If an Acquiring Entity acquires FitnessAge, FitnessAge
shall notify NAI of such acquisition. Thereafter, NAI shall have thirty (30)
days to inform FitnessAge whether it elects to retain its interest in the
Company or to sell such interest to FitnessAge. If NAI and FitnessAge cannot
agree upon an appropriate price for NAI's interest in the Company, the matter
shall be resolved through dispute resolution as provided for in Section 11.2
below.

        8.3 Except as expressly provided for in this Agreement, a Member shall
not transfer any part of the Member's Membership Interest in the Company,
whether now owned or later acquired, unless (a) the other Members unanimously
approve the transfer, and the transferee's admission to the Company as a Member
upon such Transfer and (b) the Membership Interest to be transferred, when added
to the total of all other Membership Interests transferred in the preceding 12
months, will not cause the termination of the Company under the Code. No Member
may Encumber or permit or suffer any Encumbrance of all or any part of the
Member's Membership Interest in the Company unless such Encumbrance has been
approved in writing by all Members. Any Transfer

                                       19
<PAGE>   22

or Encumbrance of a Membership Interest without such approval shall be void.
Notwithstanding any other provision of this Agreement to the contrary, a Member
who is a natural person may transfer all or any portion of his or her Membership
Interest to any revocable trust created for the benefit of the Member, or any
combination between or among the Member, the Member's spouse, and the Member's
issue; provided that the Member retains a beneficial interest in the trust and
all of the Voting Interest included in such Membership Interest. A Transfer of
an individual Member's beneficial interest in such trust, or failure to retain
such Voting Interest, shall be deemed a Transfer of a Membership Interest. No
transfer of the stock or equity interest of the Member shall constitute a
transfer of the Member's Membership Interest in the Company.

        8.4 Subject to the conditions set forth in Sections 8.2 and 8.3, if a
Member wishes to transfer any or all of the Member's Membership Interest in the
Company pursuant to a Bona Fide Offer (as defined below), the Member shall give
Notice to all other Members at least 30 days in advance of the proposed sale or
Transfer, indicating the terms of the Bona Fide Offer and the identity of the
offeror. The Company and the other Members shall have the option to purchase the
Membership Interest proposed to be transferred at the price and on the terms
provided in this Agreement. If the price for the Membership Interest is other
than cash, the fair value in dollars of the price shall be as established in
good faith by the Company. For purposes of this Agreement, "Bona Fide Offer"
means an offer in writing setting forth all relevant terms and conditions of
purchase from an offeror who is ready, willing, and able to consummate the
purchase and who is not an Affiliate of the selling Member. For 30 days after
the Notice is given, the Company shall have the right to purchase the Membership
Interest offered, on the terms stated in the Notice, for the lesser of (a) the
price stated in the Notice (or the price plus the dollar value of noncash
consideration, as the case may be) and (b) the price determined under the
appraisal procedures set forth in Section 8.8.

        If the Company does not exercise the right to purchase all of the
Membership Interest, then, with respect to the portion of the Membership
Interest that the Company does not elect to purchase, that right shall be given
to the other Members for an additional 30-day period, beginning on the day that
the Company's right to purchase expires. Each of the other Members shall have
the right to purchase, on the same terms, a part of the interest of the offering
Member in the proportion that the Member's Percentage Interest bears to the
total Percentage Interests of all of the Members who choose to participate in
the purchase; provided, however, that the Company and the participating Members
may not, in the aggregate, purchase less than the entire interest to be sold by
the offering Member.

        If the Company and the other Members do not exercise their rights to
purchase all of the Membership Interest, the offering Member may, within 90 days
from the date the Notice is given and on the terms and conditions stated in the
Notice, sell or exchange that Membership Interest to the offeror named in the
Notice on the terms set forth therein. Unless the requirements of Section 8.3
are met, the offeror under this section shall become an Assignee, and shall be
entitled to receive only the share of Income or other compensation by way of
income and the return of Capital Contribution to which the assigning Member
would have been entitled.

        Any transfer of a Membership Interest when added to the total of all
other Membership Interests transferred in the preceding 12 months shall be void
ab initio.

                                       20
<PAGE>   23

        8.5 On the happening of any of the following events ("Triggering
Events") with respect to a Member, the Company and the other Members shall have
the option to purchase the Membership Interest in the Company of such Member
(Selling Member) at the price and on the terms provided in Section 8.8 of this
Agreement:

               (a) The death, bankruptcy, or withdrawal of a Member, or the
winding up and dissolution of a corporate Member.

               (b) The failure of a Member to make the Member's Capital
Contribution pursuant to the provisions of Article III of this Agreement.

               (c) The occurrence of any other event that is, or that would
cause, a Transfer in contravention of this Agreement.

        Each Member agrees to promptly give Notice of a Triggering Event to all
other Members.

        8.6 On the receipt of Notice by the General Manager or another Member as
contemplated by Sections 8.1 and 8.4, and on receipt of actual notice of any
Triggering Event as determined in good faith by the General Manager (or if there
is no General Manager by the Members' mutual determination) (the date of such
receipt is hereinafter referred to as the "Option Date"), the General Manager
(or if there is no General Manager, the Member providing the notice) shall
promptly cause a Notice of the occurrence of such a Triggering Event to be sent
to all Members, and the Company shall have the option, for a period ending 30
calendar days following the determination of the purchase price as provided in
Section 8.8, to purchase the Membership Interest in the Company to which the
option relates, at the price and on the terms set forth in Section 8.8 of this
Agreement, and the other Members, pro rata in accordance with their prior
Membership Interests in the Company, shall then have the option, for a period of
30 days thereafter, to purchase the Membership Interest in the Company not
purchased by the Company, on the same terms and conditions as apply to the
Company. If all other Members do not elect to purchase the entire remaining
Membership Interest in the Company, then the Members electing to purchase shall
have the right, pro rata in accordance with their prior Membership Interest in
the Company, to purchase the additional Membership Interest in the Company
available for purchase. The transferee of the Membership Interest in the Company
that is not purchased shall hold such Membership Interest in the Company subject
to all of the provisions of this Agreement.

        8.7 Neither the Member whose interest is subject to purchase under this
Article, nor such Member's Affiliate, shall participate in any Vote or
discussion of any matter pertaining to the disposition of the Member's
Membership Interest in the Company under this Agreement.

        8.8 The purchase price of the Membership Interest that is the subject of
an option under Section 8.6 shall be the "Fair Option Price" of the interest as
determined under this Section 8.8. "Fair Option Price" means the cash price that
a willing buyer would pay to a willing seller when neither is acting under
compulsion and when both have reasonable knowledge of the relevant facts on the
Option Date. Each of the selling and purchasing parties shall use his, her, or
its best efforts to

                                       21
<PAGE>   24

mutually agree upon the Fair Option Price. If the parties are unable to so agree
within 30 days of the Option Date, the selling party shall appoint, within 40
days of the Option Date, one appraiser, and the purchasing party shall appoint
within 40 days of the Option Date, one appraiser. The two appraisers shall
within a period of five additional days, agree upon and appoint an additional
appraiser. The three appraisers shall, within 60 days after the appointment of
the third appraiser, determine the Fair Option Price of the Membership Interest
in writing and submit their report to all the parties.

        The Fair Option Price shall be determined by disregarding the
appraiser's valuation that diverges the greatest from each of the other two
appraisers' valuations, and the arithmetic mean of the remaining two appraisers'
valuations shall be the Fair Option Price. Each purchasing party shall pay for
the services of the appraiser selected by it, plus one half of the fee charged
by the third appraiser, and one half of all other costs relating to the
determination of Fair Option Price. The Fair Option Price as so determined shall
be payable in cash.

        8.9 Except as expressly permitted under Section 8.3, a prospective
transferee (other than an existing Member) of a Membership Interest may be
admitted as a Member with respect to such Membership Interest (Substituted
Member) only (a) on the unanimous Vote of the other Members in favor of the
prospective transferee's admission as a Member, and (b) on such prospective
transferee executing a counterpart of this Agreement as a party hereto. Any
prospective transferee of a Membership Interest shall be deemed an Assignee,
and, therefore, the owner of only an Economic Interest until such prospective
transferee has been admitted as a Substituted Member. Except as otherwise
permitted in the Act, any such Assignee shall be entitled only to receive
allocations and distributions under this Agreement with respect to such
Membership Interest and shall have no right to Vote or exercise any rights of a
Member until such Assignee has been admitted as a Substituted Member. Until the
Assignee becomes a Substituted Member, the Assigning Member will continue to be
a Member and to have the power to exercise any rights and powers of a Member
under this Agreement, including the right to Vote in proportion to the
Percentage Interest that the Assigning Member would have had in the event that
the assignment had not been made.

        8.10 Any person admitted to the Company as a Substituted Member shall be
subject to all the provisions of this Agreement that apply to the Member from
whom the Membership Interest was assigned, provided, however, that the assigning
Member shall not be released from liabilities as a Member solely as a result of
the assignment, both with respect to obligations to the Company and to third
parties, incurred prior to the assignment.

        8.11 The initial sale of Membership Interests in the Company to the
Initial Members has not been qualified or registered under the securities laws
of any state, including California, or registered under the Securities Act of
1933, in reliance upon exemptions from the registration provisions of those
laws. Notwithstanding any other provision of this Agreement, Membership
Interests may not be Transferred unless registered or qualified under applicable
state and federal securities law unless, in the opinion of legal counsel
satisfactory to the Company, such qualification or registration is not required.
The Member who desires to transfer a Membership Interest shall be responsible
for all legal fees incurred in connection with said opinion.

                                       22
<PAGE>   25

                     ARTICLE IX: DISSOLUTION AND WINDING UP

        9.1 The Company shall be dissolved upon the first to occur of the
following events:

               (a) The death, bankruptcy, retirement, resignation, expulsion, or
dissolution of a Member, provided, however, that the remaining Members may by
the Vote of all of the remaining Members, within 60 days of the happening of
that event Vote to continue the business of the Company, in which case, the
Company shall not dissolve. If the remaining Members fail to so Vote, the
remaining Members shall wind up the Company. For purposes of this Paragraph (a),
in determining the outcome of the Vote of Members, the Percentage Interest of
the Member who has died, become bankrupt, retired, resigned, been expelled, or
dissolved shall not be taken into account.

               (b) The expiration of the term of existence of the Company.

               (c) The written agreement of Members holding more than 67% of the
Membership Interest to dissolve the Company.

               (d) The sale or other disposition of substantially all of the
Company's assets.

               (e) Entry of a decree of judicial dissolution under Corporations
Law section 18-802.

               (f) At the discretion of the non-breaching Members, following the
material breach of any term of this Agreement or the Exclusive Manufacturing
Agreement of even date herewith. Dissolution under this Section 9.1, Paragraph
(f) shall occur if agreed to by Members holding at least 51% of Membership
Interests, not counting the Membership Interest of the Member in breach. Any
dispute as to the occurrence of a material breach by a Member shall be resolved
pursuant to section 11.2 hereinbelow.

               (g) The Company ceases to purchase at least 50% of all
encapsulated and tableted Products from NAI pursuant to the terms and conditions
of the Exclusive Manufacturing Agreement.

        9.2 On the dissolution of the Company, the Company shall engage in no
further business other than that necessary to wind up the business and affairs
of the Company. The General Manager or, if there is no General Manager, the
Members, shall wind up the affairs of the Company. The Persons winding up the
affairs of the Company shall give Notice of the commencement of winding up by
mail to all known creditors and claimants against the Company whose addresses
appear in the records of the Company. After paying or adequately providing for
the payment of all known debts of the Company (except debts owing to Members),
the remaining assets of the Company shall be distributed or applied in the
following order:

               (a) To pay the expenses of liquidation.

               (b) To the establishment of reasonable reserves for contingent
liabilities or obligations of the Company. Upon the General Manager's or
Member's determination that such reserves are no longer necessary, said reserves
shall be distributed as provided in this Section 9.2.

                                       23
<PAGE>   26

               (c) To repay outstanding loans from Members to the Company. If
there are insufficient funds to pay such loans in full, each Member shall be
repaid in the ratio that the Member's loan, together with interest accrued and
unpaid thereon, bears to the total of all such loans from Members, including all
interest accrued and unpaid thereon. Such repayment shall first be credited to
unpaid principal and the remainder shall be credited to accrued and unpaid
interest.

               (d) Among the Members as provided in Article IV, Section 4.6 and
then to Members with Positive Capital Account Balances until such Capital
Accounts equal zero.

               (e) Thereafter, to Members according to their Percentage
Interests.

        9.3 Each Member shall look solely to the assets of the Company for the
return of the Member's investment, and if the Company property remaining after
the payment or discharge of the debts and liabilities of the Company is
insufficient to return the investment of each Member, such Member shall have no
recourse against any other Members for indemnification, contribution, or
reimbursement, except as specifically provided in this Agreement, the License
Agreement by and between FitnessAge and the Company ("License Agreement"), and
the Exclusive Manufacturing Agreement by and between NAI and the Company.

                           ARTICLE X: NONCOMPETITION,
                    CONFIDENTIALITY AND INTELLECTUAL PROPERTY

        10.1 During the term of Company's existence, each Member hereby
covenants with the Company and each other Member that the Member will not
directly or indirectly, through one or more affiliates or otherwise, engage in
any business or transaction which competes with the Company in its sale of
custom nutritional supplement products in the health club and fitness
environment except as may be provided for in the License Agreement by and
between Fitness Age and the Company. There shall be no restrictions or
limitations on the business activities of the Members beyond the limited scope
set forth in this Section 10.1.

        10.2 "Confidential Information" means all trade secrets, "know-how,"
customer lists, pricing policies, operational methods, fitness or other
programs, computer software and hardware codes and configurations, and other
business information of the Company or any Member which is created, developed,
produced, or otherwise arises at any time.

        10.3 Each Member hereby stipulates that a breach of the provisions of
this Article X will result in irreparable damage and injury to the Company for
which no money damages could adequately compensate it. If the Member breaches
the provisions of this Agreement, in addition to all other remedies to which the
Company may be entitled, and notwithstanding the provisions of Article XI,
Section 11.2, the Company shall be entitled to an injunction to enforce the
provisions of this Agreement, to be issued by any court of competent
jurisdiction, to enjoin and restrain the Member and each and every Person
concerned or acting in concert with the Member from the continuance of such
breach. Each Member expressly waives any claim or defense that an adequate
remedy at law might exist for any such breach. Each Member expressly agrees that
the terms of this Section 10.3, and the remedies provided for herein, are
equally exercisable and available to any

                                       24
<PAGE>   27

Member who seeks to prevent the disclosure of its Confidential Information or
unauthorized use of its Member Intellectual Property (as defined below).

        10.4 If the provisions contained herein shall be deemed to exceed the
time or geographic limits or any other limitation imposed by applicable law in
any jurisdiction, then such provision shall be deemed reformed in such
jurisdiction to the maximum extent permitted by applicable law.

        10.5 Each Member shall retain all right, title, and interest in and to
any intellectual property that it developed, owned, held or adopted either prior
to the execution of this Agreement or independent of such Member's participation
in the Company, including but not limited to all trade names, trademarks, logos,
symbols, patents, copyrights and trade secrets ("Member Intellectual Property").
Neither the Company, nor any Member, shall use, copy or display any Member
Intellectual Property without the express written consent of the Member who owns
such Member Intellectual Property and then only pursuant to the strict terms and
conditions of such written consent. Except as otherwise provided in the License
Agreement, in the event, that any Member withdraws, resigns or otherwise
discontinues its membership or participation in the Company, whether voluntarily
or involuntarily, the Company shall immediately cease and desist any further use
or display of the Member's Member Intellectual Property unless otherwise
specifically agreed upon in writing.

        10.6 The Company shall own all right, title and interest in and to any
intellectual property that is developed, created or adopted by or on behalf of
the Company ("Company Intellectual Property"). No Member shall be permitted to
use, reveal, sell or otherwise exploit the Company Intellectual Property without
the consent of the Company. The General Manager shall have the right to
prosecute, formalize and protect such Company Intellectual Property by whatever
means and in whatever forum the General Manager deems in its reasonable
discretion to be appropriate. All Members shall comply with all reasonable
requests by the General Manager to support the prosecution, formalization and
protection of the Company Intellectual Property, including the execution of any
documents the General Manager deems necessary for such tasks. If there is no
General Manager, the Members shall cooperate to protect such Company
Intellectual Property and shall comply with all reasonable requests made by any
Member to support such activities.

        10.7 In the event that the Company is dissolved, or otherwise
terminated, all Company Intellectual Property shall be jointly owned by both
Members, without compensation to the Company or the other Member. Each Member
agrees to execute any and all necessary documents to effectuate such joint
ownership. At dissolution, each Member shall retain all right, title, ownership
and interest in its Member Intellectual Property.

                   ARTICLE XI: INDEMNIFICATION AND ARBITRATION

        11.1 The Company shall have the power to indemnify any Person who was or
is a party, or who is threatened to be made a party, to any Proceeding by reason
of the fact that such Person was or is a Member, Manager, officer, employee, or
other agent of the Company, or was or is serving at the request of the Company
as a director, officer, employee, or other Agent of another limited liability
company, corporation, partnership, joint venture, trust, or other enterprise,
against expenses,

                                       25
<PAGE>   28

judgments, fines, settlements, and other amounts actually and reasonably
incurred by such Person in connection with such proceeding, if such Person acted
in good faith and in a manner that such Person reasonably believed to be in the
best interests of the Company, and, in the case of a criminal proceeding, such
Person had no reasonable cause to believe that the Person's conduct was
unlawful. The termination of any proceeding by judgment, order, settlement,
conviction, or upon a plea of nolo contendere or its equivalent, shall not, of
itself, create a presumption that the Person did not act in good faith and in a
manner that such Person reasonably believed to be in the best interests of the
Company, or that the Person had reasonable cause to believe that the Person's
conduct was unlawful.

        To the extent that an agent of the Company has been successful on the
merits in defense of any Proceeding, or in defense of any claim, issue, or
matter in any such Proceeding, the agent shall be indemnified against expenses
actually and reasonably incurred in connection with the Proceeding. In all other
cases, indemnification shall be provided by the Company only if authorized in
the specific case by holders of at least 67% of Membership Interests.

        "Agent," as used in this Section 11.1, shall include a trustee or other
fiduciary of a plan, trust, or other entity or arrangement.

        "Proceeding," as used in this Section 11.1, means any threatened,
pending, or completed action or proceeding, whether civil, criminal,
administrative, or investigative.

        Expenses of each Person indemnified under this Agreement actually and
reasonably incurred in connection with the defense or settlement of a proceeding
may be paid by the Company in advance of the final disposition of such
proceeding, as authorized by the General Manager, if it is not seeking
indemnification or, by the holders of at least 67% of Membership Interests upon
receipt of an undertaking by such Person to repay such amount unless it shall
ultimately be determined that such Person is entitled to be indemnified by the
Company. "Expenses," as used in this Section 11.1, includes, without limitation,
attorney fees and expenses of establishing a right to indemnification, if any,
under this Section 11.1.

        11.2 Any dispute, controversy or claim arising from, out of or in
connection with, or relating to, this Agreement or any breach or alleged breach
of this Agreement, except allegations of violations of Federal or State
securities laws or as otherwise provided for in this Agreement, will upon the
request of any Member involved be submitted to the Judicial Arbitration and
Mediation Service in San Diego, California, or any other private arbitration
service utilizing former judges as mediators and approved by the Members
involved in the dispute. The dispute once submitted shall initially be submitted
to mediation within twenty-one (21) days of submission. If mediation does not
resolve the dispute, such dispute shall be resolved by arbitration in the County
of San Diego, California (or at any other place or under any other form of
arbitration mutually acceptable to the Members involved). The arbitrator shall
follow and apply the California Evidence Code in the conduct of the arbitration,
and the parties shall be entitled to discovery in accordance with the provisions
of the California Code of Civil Procedure. Any award rendered shall be final,
binding and conclusive upon the parties and shall be non-appealable, and a
judgment thereon may be entered in the highest State or Federal court of the
forum, having jurisdiction. The expenses of the mediation and arbitration shall
be borne equally by the parties to the arbitration, provided that each party
shall

                                       26
<PAGE>   29

pay for and bear the cost of its own experts, evidence and attorneys' fees,
except that in the event of arbitration and at the discretion of the arbitrator,
any arbitration award may include the costs, fees and expenses of a party's
attorneys. Any Member may commence the dispute resolution process by sending a
written demand for mediation and/or arbitration to the other Member(s). Such
demand shall set forth the nature of the matter to be resolved. The place of
mediation and/or arbitration shall be determined in accordance with Section
13.14 hereinbelow. The substantive law of the State of Delaware shall be applied
by the arbitrator to the resolution of the dispute. The prevailing party shall
be entitled to reimbursement of attorney fees, costs, and expenses incurred in
connection with the arbitration. All decisions of the arbitrator shall be final,
binding, and conclusive on all parties. Judgment may be entered upon any such
decision in accordance with applicable law in any court having jurisdiction
thereof. The arbitrator (if permitted under applicable law) or such court may
issue a writ of execution to enforce the arbitrator's decision. Neither this
Section 11.2 nor this arbitration provision shall preclude any Member from
seeking and obtaining enforcement of this arbitration provision from a court of
competent jurisdiction or from seeking and obtaining equitable relief, including
injunctive relief, to enforce the terms and conditions of the sections of this
Agreement which relate to Confidentiality (Sections 10.3 through 10.5),
protection of intellectual property (Sections 10.6 through 10.8), and Indemnity
(Section 11.1).

                     ARTICLE XII: ATTORNEY-IN-FACT AND AGENT

        12.1 Each Member, by execution of this Agreement, irrevocably
constitutes and appoints the General Manager as such Member's true and lawful
attorney-in-fact and agent, with full power and authority in such Member's name,
place, and stead to execute, acknowledge, and deliver, and to file or record in
any appropriate public office: (a) any certificate or other instrument that may
be necessary, desirable, or appropriate to qualify the Company as a limited
liability company or to transact business as such in any jurisdiction in which
the Company conducts business; (b) any certificate or amendment to the Company's
Certificate of Formation or to any certificate or other instrument that may be
necessary, desirable, or appropriate to reflect an amendment approved by the
Members in accordance with the provisions of this Agreement; (c) any
certificates or instruments that may be necessary, desirable, or appropriate to
reflect the dissolution and winding up of the Company; and (d) any certificates
necessary to comply with the provisions of this Agreement. This power of
attorney will be deemed to be coupled with an interest and will survive the
Transfer of the Member's Economic Interest. Notwithstanding the existence of
this power of attorney, each Member agrees to join in the execution,
acknowledgment, and delivery of the instruments referred to above if requested
to do so by the General Manager. This power of attorney is a limited power of
attorney and does not authorize the General Manager to act on behalf of a Member
except as described in this Article XII.

                        ARTICLE XIII: GENERAL PROVISIONS

        13.1 This Agreement, together with the Exclusive Manufacturing Agreement
by and between the Company and NAI and the License Agreement, constitutes the
whole and entire agreement of the parties with respect to the subject matter of
this Agreement, and it shall not be modified or amended in any respect except by
a written instrument executed by all the parties. This

                                       27
<PAGE>   30

Agreement replaces and supersedes all prior written and oral agreements by and
among the Members and Manager or any of them.

        13.2 This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

        13.3 If any provision of this Agreement is determined by any court of
competent jurisdiction or arbitrator to be invalid, illegal, or unenforceable to
any extent, that provision shall, if possible, be construed as though more
narrowly drawn, if a narrower construction would avoid such invalidity,
illegality, or unenforceability or, if that is not possible, such provision
shall, to the extent of such invalidity, illegality, or unenforceability, be
severed, and the remaining provisions of this Agreement shall remain in effect.

        13.4 This Agreement shall be binding on and inure to the benefit of the
parties and their heirs, personal representatives, and permitted successors and
assigns.

        13.5 Whenever used in this Agreement, the singular shall include the
plural and the plural shall include the singular, and the neuter gender shall
include the male and female as well as a trust, firm, company, or corporation,
all as the context and meaning of this Agreement may require.

        13.6 The parties to this Agreement shall promptly execute and deliver
any and all additional documents, instruments, notices, and other assurances,
and shall do any and all other acts and things, reasonably necessary in
connection with the performance of their respective obligations under this
Agreement and to carry out the intent of the parties.

        13.7 Except as provided in this Agreement, no provision of this
Agreement shall be construed to limit in any manner the Members in the carrying
on of their own respective businesses or activities.

        13.8 Except as specifically provided in this Agreement, no provision of
this Agreement shall be construed to constitute a Member, in the Member's
capacity as such, the agent of any other Member.

        13.9 Each Member represents and warrants to the other Members that the
Member has the capacity and authority to enter into this Agreement.

        13.10 The article, section, and paragraph titles and headings contained
in this Agreement are inserted as matter of convenience and for ease of
reference only and shall be disregarded for all other purposes, including the
construction or enforcement of this Agreement or any of its provisions.

        13.11 This Agreement may be altered, amended, or repealed only by a
writing signed by all of the Members.

        13.12 Time is of the essence of every provision of this Agreement that
specifies a time for performance.

                                       28
<PAGE>   31

        13.13 This Agreement is made solely for the benefit of the parties to
this Agreement and their respective permitted successors and assigns, and no
other person or entity shall have or acquire any right by virtue of this
Agreement.

        13.14 This Agreement and all amendments hereto shall be governed by the
laws of the State of Delaware. Subject to the obligation to arbitrate disputes
set forth herein any action or proceeding seeking to enforce any provision of,
or based on any right arising out of, this Agreement may be brought against any
of the Parties only in the courts of the State of California, or, if it has or
can acquire jurisdiction, in the appropriate United States District Court for
the Southern District of California, and each of the Parties consents to such
venue and to the jurisdiction of such courts (and of the appropriate appellate
courts) in any such action or proceeding and waives any objection to venue laid
therein. Process in any action or proceeding referred to in the preceding
sentence may be served on any Party anywhere in the world.

        13.15 Each Party agrees to do any thing and sign any documents which are
necessary and desirable to accomplish any of the goals, terms or conditions of
this Agreement.

        IN WITNESS WHEREOF, the parties have executed or caused to be executed
this Agreement on the day and year first above written.

                                    FITNESSAGE INCORPORATED
                                    a Nevada corporation

                                    By: /s/ Michael L. Jeub
                                       ---------------------------------------
                                       Michael L. Jeub, President

                                    NATURAL ALTERNATIVES
                                    INTERNATIONAL, INC.
                                    a Delaware corporation

                                    By: /s/ Mark A. LeDoux
                                       ---------------------------------------
                                       Mark A. LeDoux, Chief Executive Officer

                                       29
<PAGE>   32

                                   EXHIBIT "A"

                               SCHEDULE OF MEMBERS

<TABLE>
<CAPTION>
Member Name & Address                      Original Capital Investment          Percentage Interest
---------------------                      ---------------------------          -------------------
<S>                                        <C>                                  <C>
FITNESSAGE INCORPORATED                              $150,000                            60%
4250 EXECUTIVE SQUARE, STE. 101
LA JOLLA, CA  92037

NATURAL ALTERNATIVES INTERNATIONAL, INC.             $100,000                            40%
1185 LINDA VISTA DRIVE
SAN MARCOS, CA 92069
</TABLE>

<PAGE>   33

                                   EXHIBIT "B"

                              CURRENT FISCAL YEARS
                               APPROVED BUDGET OF
                              CUSTOM NUTRITION, LLC

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