Abstract:
A transformable exercise device used both for stability and strength training is disclosed. Embodiments include a main portion comprising a sphere that may be used wholly in the manner of a medicine ball, kettlebell, rolling device, or separated into two hemisphere elements and used for various exercises including push-ups, standing balance, agility training, and weight training. The two hemisphere elements may be easily and securely locked together with a U-shaped locking mechanism that, when actuated, is congruent with the surface of the sphere to create a medicine ball configuration. The locking mechanism may be modified with various handle attachments, or removed and replaced with separate components added externally to the device providing various hand or foot placements, or alter the nature of the exercise equipment. The device may be used in conjunction with current technology to provide visual and auditory feedback on user&#39;s balance or repetitions while performing exercises.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the benefit of U.S. Provisional Patent Application No. 61,924,170, filed Jan. 6, 2014, and entitled “Stability and Strength Training Device”, the complete contents of which are hereby incorporated herein by reference for all purposes. 
     
    
     BACKGROUND 
       [0002]    The present disclosure relates to a transformable exercise device that can be used for both balance and strength training. The device may comprise of two equally sized hemispheres that may be used individually as dumbbells, push-up handles, or lower extremity agility and/or balance equipment. Attachments to the device may further alter the nature of the exercise apparatus. The two hemispheres may also be placed together to form a single sphere that can be used in a similar manner as a medicine ball or, with appropriate attachments, a kettlebell, or rolling device. The device may be equipped to accommodate electronic devices that can provide proprioceptive and positional feedback to the user. The device may be equipped to add or subtract weight. 
       SUMMARY 
       [0003]    The present disclosure relates to a transformable exercise device designed to provide both stability and strength training to the user. The device may comprise of two equally sized hemispheres that can be used independently as push-up devices, dumbbells, agility training equipment, or locked together to form a medicine ball like device. Further, various exercise attachments may be added to alter the device including, but not limited to, a standing balance device, kettlebell, rolling device, or alternate push-up apparatus. The exercise device may also be used with current electronic devices such as smart phones or tablets to provide the user proprioceptive or positional feedback. In some examples, the device may be altered in weight for different user levels by the addition or subtraction of weighted material. 
         [0004]    Accordingly, in one embodiment, a pair of hemispherical push-up exercise devices may be utilized to provide multi-directional instability for the user while still maintaining the safety of the device by placing the handles below where the center of mass would be for the entire sphere. 
         [0005]    In another embodiment, the two hemispherical push-up exercise devices may be combined into a single spherical object, similar to a medicine ball, through a pair of U-shaped locking mechanisms. 
         [0006]    In further embodiments, a series of exercise devices may be configured by the insertion of various exercise attachments that lock directly into either side of each hemispherical push-up exercise device, or the conjoined medicine ball configuration using a pair of U-shaped locking mechanisms. The attachments will include, but are not limited to, a single or pair of “kettlebell” style handles, a pair of foot plates to provide a standing balance device, a pair of handle bars that may be inserted into a single hemisphere to provide an alternate push-up apparatus with a single fulcrum, and a free-spinning handle bar to form a rolling device. 
         [0007]    In another embodiment, an exercise device compatible with electronics, such as smart phones and tablets, that can measure the balance and proprioceptive awareness of the user during balancing activities, may be added to the device. 
         [0008]    In a further embodiment, the exercise device may comprise of, or be fitted with, various weights and materials that are dependable, inexpensive, and effective in accomplishing-the-intended purposes of the exercise device. 
         [0009]    This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Furthermore, the claimed subject matter is not limited to implementations that solve any or all disadvantages noted in any part of this disclosure. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  shows a perspective view of a pair of hemispherical push-up exercise devices according to an embodiment of the present disclosure. 
           [0011]      FIG. 2  shows an expanded, perspective view of the pair of hemispherical push-up exercise devices held together by a U-shaped locking mechanism, forming a medicine ball, according to an embodiment of the present disclosure. 
           [0012]      FIG. 3  shows an enlarged cross-sectional view of the U-shaped locking mechanism with a pair of recessed levers used to lock together the two hemispherical push-up exercise devices, according to one embodiment of the present disclosure. 
           [0013]      FIG. 4  shows a partially expanded perspective view of a single hemispherical push-up exercise device with foot plate attachments, according to an embodiment of the present disclosure. 
           [0014]      FIG. 5  shows a partially exploded perspective view of a single hemispherical push-up exercise device with a pair of handle bar attachments, according to an embodiment of the present disclosure. 
           [0015]      FIG. 6  shows a partially exploded perspective view of the medicine ball configuration with a spinning handle bar attachment, according to an embodiment of the present disclosure. 
           [0016]      FIG. 7  shows a partially exploded perspective view of a kettlebell handle attachment incorporated with the medicine ball configuration, according to an embodiment of the present disclosure. 
           [0017]      FIG. 8  shows an enlarged, cross sectional view of one hemispherical push-up device illustrating a weight variation system, according to an embodiment of the present disclosure. 
           [0018]      FIG. 9  shows another perspective view of the pair of hemispherical push-up exercise devices held together by the U-shaped locking mechanism, forming a medicine ball, according to one embodiment of the present disclosure. 
           [0019]      FIG. 10  shows another partially exploded, perspective view of the pair of hemispherical push-up exercise devices held together by the U-shaped locking mechanism, forming a medicine ball, according to one embodiment of the present disclosure. 
           [0020]      FIG. 11  shows a perspective view of an alternate configuration of a single hemispherical push-up exercise device with a pair of foot plate attachments, according to one embodiment of the present disclosure. 
           [0021]      FIG. 12  shows a partially exploded perspective view of an alternate configuration of the medicine ball configuration with a spinning handle bar attachment, according to an embodiment of the present disclosure. 
           [0022]      FIG. 13  shows an exploded perspective view of an alternate configuration of the medicine ball configuration including the kettlebell handle attachment with another example U-shaped locking mechanism, according to one embodiment of the present disclosure. 
           [0023]      FIG. 14  shows an enlarged, cross sectional view of the U-shaped locking mechanism with spring-loaded push buttons and actuator levers used as an alternative means of securing the U-shaped locking mechanism into the medicine ball configuration, according to an embodiment of the present disclosure. 
           [0024]      FIG. 15  shows a front view of a single hemispherical push-up exercise device with an alternate configuration of the foot plate attachments, according to one embodiment of the present disclosure. 
           [0025]      FIG. 16  shows a perspective view of a pair of hemispherical push-up exercise devices with a cross bar attachment, according to one embodiment of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0026]    The present disclosure relates to a transformable exercise device designed to develop both strength and stability for the user. It may be comprised of two equal sized hemispheres that may be used separately for various push-up exercises, as dumbbells, or standing balance exercises, or conjoined as a single sphere by a pair of U-shaped locking members and used as various forms of exercise devices such as a medicine ball, a rolling abdominal strengthening device, or a kettlebell. Each hemisphere may comprise of a recessed handle that is positioned below the center of mass of the sphere, thus providing a push-up handle that is both multi-directionally unstable while still being safe for the user. The recessed handles may also function as a receptacle for the U-shaped locking members that may conjoin the device into a single medicine ball, or to accept the various exercise attachments to create multiple pieces of exercise equipment. The flat surfaces of the hemispheres may be designed with inter-locking surfaces to prevent slipping of the two hemispheres when conjoined. The U-shaped locking mechanism and various exercise attachments may be configured with any variety of locking mechanism including, but not limited to, spring-loaded tabs, pins, locking rings, plunger buttons, clasps, etc., and may be designed to be easily locked into place or released. Additionally, the present disclosure may be configured to be of varying weights and sizes to accommodate different skill and strength levels of different users. Each hemisphere may be configured such that additional weights may be added or subtracted. The additional weights may be of various materials and designed to be easily locked into place or removed. 
         [0027]    Turning to  FIG. 1 , an example embodiment of the exercise device is shown. The exercise device may be comprised of two identical hemisphere elements  12  with a main body element  14  and a horizontal cross member  16  acting as a handle with or without a padded hand grip  17 . The main body element  14  includes a flat grooved surface  18 , a rounded outer surface  20 , and a large recessed centralized cavity  22  to allow the user to reach inside the main body element  14  to access the horizontal cross member  16 . The horizontal cross member  16  traverses the large recessed centralized cavity  22  and the main body element  14  to form a handle for the user that may be positioned below a center of mass  24  if the entire sphere was present. The positioning of the horizontal cross member  16  below the center of mass  24  increases user safety by decreasing the propensity for the hemisphere elements  12  to roll while being used as a push-up device. The horizontal cross member  16  may be positioned 1/16 inch to 3 inches below the flat grooved surface  18  so as to be below the center of mass  24  and is not intended to be so low as to eliminate the ability of the user to reach around the horizontal cross member  16 . As shown in  FIG. 1 , the horizontal cross member  16  may be of square tubular shape, but in some embodiments, the horizontal cross member  16  may be of other alternative tubular shapes, including triangular, round, square, hexagonal, anatomical, etc. Flat grooved surface  18  may also be configured with one or more grooves for the accommodation of various exercise attachments, such as a pair of grooves  120 . In some configurations, the flat grooved surface  18  may be further recessed with a pair of shallow indentations on opposite sides of the inner edges of the large recessed centralized cavity  22  to allow an electronic device, or alternatively, an electronic device holder, to securely attach to the top of the flat grooved surface  18 . 
         [0028]    Alternative embodiments of the hemisphere element  12  may include variations in the configuration of the main body element  14 , flat grooved surface  18 , rounded outer surface  20 , horizontal cross member  16 , and large recessed centralized cavity  22 . 
         [0029]    The main body element  14  may comprise of a solid material, or alternatively be a hollow shell, a compartmentalized shell, an inflated shell, or a hollow, compartmentalized shell, or an inflated shell. In some embodiments, the shell may be completely or partially filled with materials to add strength or weight. Additionally, the main body element  14  may comprise of a rigid or pliable surface. The rounded outer surface  20  and the flat grooved surface  18  of the main body element  14  may comprise of various combinations of the above stated variations. 
         [0030]    The flat grooved surface  18  may comprise of alternately shaped surfaces including, but not limited to, various shapes or sizes of nodules, various orientations of grooves (parallel, rayed, etc.), textured, etc. In addition, the flat grooved surface  18  may also be configured to accept attachments for electronic devices such as a non-skid device plate  102  as illustrated in  FIGS. 4 and 5 . 
         [0031]    The flat grooved surface  18  may include multiple small apertures that may accept multiple attachment fasteners for adhering the flat grooved surface  18  to the rounded outer surface  20 , and grooves  120  for including attachments to the medicine ball configuration  42 . 
         [0032]    In some embodiments, the horizontal cross member  16  may include smaller apertures for accommodating tabs to fasten the horizontal cross member  16  between the flat grooved surface  18  and rounded outer surface  20 . Additionally, the bottom of the large recessed centralized cavity  22  may comprise of a rib cover to provide a smooth surface to the bottom of the large recessed centralized cavity  22 . 
         [0033]    The rounded outer surface  20  may comprise of various arced dimensions, including multiple arced dimensions within a single embodiment of the rounded outer surface  20 , to provide variations in rolling quality and instability. Additionally, the rounded outer surface  20  may also comprise of a rubberized over-molding material, etc., to alter the coefficient of friction or vary the amount of grip for the user. In some examples a coating or other surface treatment may be used to vary the surface texture. 
         [0034]    The horizontal cross member  16  may comprise of various shapes such as triangular, square, hexagonal, anatomical, bulbous, etc. Additionally, the cross member  16  may be various textures to increase or decrease user grip. Furthermore, the horizontal cross member  16  may alternatively be a solid structure, a hollow structure, a shell, or a compartmentalized inflated shell wherein the compartmentalized shell is hollow or filled completely or partially with various materials to add strength or weight. Alternatively, the horizontal cross member  16  may comprise of a rigid or pliable material. Each horizontal cross member  16  may contain more than a pair of locking apertures  26 , also referred to as smaller apertures, to accommodate different attachment locking components. 
         [0035]    The large recessed centralized cavity  22  may be of various shapes such as square, hexagonal, oval, etc. Additionally, the large recessed centralized cavity  22  may be of various depths as long as the intended function of the large recessed centralized cavity  22  to allow access to the horizontal cross member  16  is maintained as described above. Furthermore, the large recessed centralized cavity  22  may be comprised with a plurality of small recessed lateral cavities  23  configured to house additional weighted members  156  as illustrated in  FIG. 8 . Yet another modification of the large recessed centralized cavity  22  may be the addition of a rib cover plate  134  for providing a smooth surface to the bottom of the large recessed centralized cavity  22  as illustrate in  FIG. 8 . Additionally, the rib cover plate  134  may be comprised with lateral spring plates  152  for assisting in the locking and removal of said optional weighted members  156  as illustrated in  FIG. 8 . 
         [0036]    Turning now to  FIG. 1 , each horizontal cross member  16  may include the pair of locking apertures  26  that may be positioned to accept a locking mechanism such as a locking tab  110  on spring mechanism  108  (as illustrated in  FIG. 3 ), spring-loaded ball plunger, a-spring-loaded push button, a spring-loaded button  32  with an actuator lever  34  and a finger tab  35  (as illustrated in  FIG. 14 ), a spring-loaded button with a finger tab recessed lever, or other locking device. Each horizontal cross member  16  may also contain a pair of attachment apertures  36 , also referred to as larger apertures. Each of the pair of attachment apertures  36  may be located at each terminus that may extend to and conjoin with the rounded outer surface  20  of the main body element  14 . The pair of attachment apertures  36  may accommodate a pair of arm portions  40  of an U-shaped locking mechanism  38  as illustrated in  FIGS. 2 ,  3 ,  6 ,  7 ,  10 ,  12 ,  13 , and  14 , an arm segment  54  for each of a pair of foot plate attachment  52  illustrated in  FIGS. 4 and 11 , and a shaft portion  66  of a pair of handle bar attachments  64  illustrated in  FIG. 5 . 
         [0037]    The pair of hemisphere elements  12  may comprise of material strong enough to handle the stresses of the exercise device, including, but not limited to, plastic, metal, carbon fiber, fiberglass, or rubber material. In some embodiments, each main body element  14  may be solid, hollow, compartmentalized, or alternatively a shell filled completely or partially with various materials to vary the weight of the hemisphere elements  12 . Additionally, the hemisphere elements  12  may be overlaid with rubber or neoprene sheath to add grip to the device. The rubber overlay may be confined to the rounded outer surface  20  of each main body element  14 , the horizontal cross member  16 , or both. In addition, the horizontal cross member  16  may comprise of materials including but not limited to, plastic, metal, carbon fiber or fiberglass. Also, the pair of hemisphere elements  12 , may comprise of carbon fiber, fiberglass, metal, or similar material, and may be compression molded into the described shape. Alternatively, a separate compression molding may be used to conjoin the flat grooved surface  18  with the large recessed centralized cavity  22 , the rounded outer surface  20 , and the horizontal cross member  16  of each hemisphere element  12 . Each compression mold may then be conjoined by fasteners, adhesive, fiberglass or carbon fiber wrapping of the seam, or, in case of metal, welded together, or some other form of adhesion. Furthermore, the pair of hemisphere elements  12 , may comprise of plastic or rubber, and may be configured by injection molding techniques. Injection molding may allow the hemisphere elements  12  to be a single piece, or several pieces that may then be adhered together. In some embodiments, the horizontal cross member  16 , may comprise of a different material than the main body element  14 , and may be added to the main body element  14  through adhesion or the main body element  14  may be injection molded around the horizontal cross member  16 . 
         [0038]    Turning now to  FIG. 2 , an example embodiment is illustrated showing the conjoining of the two identical hemisphere elements  12 , using a pair of U-shaped locking mechanisms  38 , into a single medicine ball configuration  42 . Each locking mechanism may include the pair of arm portions  40 , a spring mechanism  108  with a locking tab  110  cut or molded within said arm portion  40 , a base element  46  with a small centralized component connection aperture  48  for accommodating a protective cover  150 , and two medium apertures  112  that may allow access to a pair of finger tab recessed levers  106  of each said arm portion  40 . The U-shaped locking mechanism  38  may be inserted into the single medicine ball configuration  42  by pressing or squeezing the pair of finger tab recessed levers  106 , allowing clearance of the locking tab  110  as each arm portion  40  is inserted into the horizontal cross member  16  until said locking tab  110  can engage with the pair of locking apertures  26  of each horizontal cross member  16 . The U-shaped locking mechanism  38  may be removed in the reverse manner of squeezing the pair of finger tab recessed levers  106  of each arm portion  40  until each locking tab  110  is disengaged from the locking apertures  26  of each horizontal cross member  16  allowing each said arm portion  40  to traverse said horizontal cross member  16  until removed from the single medicine ball configuration  42 . The arm portions  40  of the U-shaped locking mechanism  38 , as illustrated in  FIG. 2 , may be square tubular in shape. Alternatively, in some embodiments, the arm portions  40  may be of any tubular shape including, but not limited to, triangular, round, square, hexagonal, etc., that may coincide with the shape of the attachment aperture  36  and horizontal cross member  16  of the hemisphere elements  12 . To transform the pair of hemisphere elements  12  into a medicine ball configuration  42 , as a first step the flat grooved surface  18  of the main body element  14  may be seeded together so that the attachment aperture  36  of the horizontal cross member  16  may be adjacent to each other. Then, the arm portions  40  of the locking mechanism  38  may be inserted into the attachment aperture  36  of the horizontal cross member  16  and slid inward until the locking apertures  26  of the horizontal cross member  16  accept the locking tab  110 . In some embodiments, the rounded outer surface of each base element  46  may be congruous with the rounded outer surface  20  of the main body element  14  when the locking mechanism  38  is fully inserted. 
         [0039]    Alternate embodiments of the U-shaped locking mechanism  38  may include variations to the arm portions  40  and base element  46 . 
         [0040]    The arm portions  40  of the U-shaped locking mechanism  38  may comprise of various lengths and shapes while still achieving the intended function of the embodiment. Further, the arm portions  40  may comprise of solid material, or may be alternatively configured as a hollow shell, or a compartmentalized shell, or an inflated shell, or a hollow, compartmentalized shell, or an inflated or a shell filled completely or partially with various materials to add strength or weight. The arm portions  40  may comprise various alternative locking components including, but not limited to, ball plungers, spring-loaded buttons, key activated locking pins, locking rings, locking levers, locking grooves (spring-loaded plunger ball or locking ring incorporated into the horizontal cross member  16  that would engage into said groove), magnets, locking tumblers, etc. Furthermore, the base element  46  may comprise of alternative apertures, grooves, keyholes, etc., to coincide with alternative locking components. 
         [0041]    The base element  46  of the U-shaped locking mechanism  38  may comprise of solid material, or alternatively configured as a hollow shell, a compartmentalized shell, an inflated shell, or a hollow, compartmentalized shell. Additionally, the base element  46  may comprise of an inflated shell, or a shell filled completely or partially with various materials to add strength or weight. Still further, the base element  46  may be configured to have various sized and shaped apertures in addition to, or in lieu of the two grooves  51  (shown in  FIG. 10 ), medium apertures  112 , and the centralized component connection aperture  48 , also referred to as a component connection aperture, including, but not limited to, apertures for accommodating various locking components, apertures for assisting in disengaging the locking components, apertures for allowing attachments to traverse the base element  46 , apertures for providing a means for gripping the base element  46 , apertures for accommodating the attachment of over-molding to the base element  46  such a cover, for example, etc. The base element  46  may comprise of a rigid or semi-rigid material of various textures to modify the user&#39;s grip of the base element  46 . The base element  46  may be covered with various materials including, but not limited to, rubber, plastic, foam, etc., to vary the amount of grip provided to the user of the device. 
         [0042]      FIG. 3  illustrates an enlarged, cross-sectional view of one half of the U-shaped locking mechanism  38  with large centralized aperture  113  (for use with spinning handle bar attachment  72  and kettlebell handle attachment  82 ) replacing the small centralized component connection aperture  48  as one example of an alternate embodiment of the U-shaped locking mechanism  38  as illustrated in  FIG. 2 . The U-shaped locking mechanism  38  includes the base element  46 , and a pair of arm portions  40  configured to fit into an attachment aperture  26  of horizontal cross member  16 . Each base element  46  may include a small centralized component connection aperture  48  to affix a protective cover (as shown in  FIG. 2 ), or a large centralized aperture  113  for use with various exercise attachments. Additionally, each arm portion  40  may include a spring mechanism  108  with a locking tab  110  and finger tab or recessed lever  106  cut or molded within said arm portion  40 . The spring mechanism  108  may be of various sizes and tensions of spring to accommodate multiple applications. Each locking tab  110  may be positioned on the outside of each of the arm portions  40 , and configured to intersect with the locking apertures  26  of the horizontal cross member  16  of the hemisphere elements  12  illustrated in  FIGS. 1-2  when the locking mechanism  38  is fully inserted. In some embodiments, both the locking tab  110  of the spring mechanism  108  on the arm portions  40 , and the locking apertures  26  on the horizontal cross member  16 , may be positioned to any location on the arm portions  40  and cross member  16 , while still configured to lock the pair of hemisphere elements  12  together. Locking tabs  110  may be disengaged from the pair of locking apertures  26  of the horizontal cross member  16  by pressing or squeezing the pair of finger tab recessed levers  106 . 
         [0043]    The pair of locking mechanism  38  may comprise of any material strong enough to handle the stresses of the exercise device, including, but not limited to, plastic, metal, carbon fiber, fiberglass, or rubber material. Also, the locking mechanism  38  may comprise of carbon fiber, fiberglass, metal, or similar material, and may generally be compression molded into a shape similar to that illustrated in  FIG. 2 . A separate compression may be required for each arm portion  40 , and the base element  46 . In one embodiment, compression mold may be conjoined by fasteners, including, but not limited to: screws, adhesive, fiberglass or carbon fiber wrapping of the seam. In further embodiments, when the locking mechanism comprises of metal or other suitable material, the compression mold may be welded together, or some other form of adhesion. In some embodiments, each locking mechanism  38 , may comprise of plastic or rubber, and may be configured using injection molding techniques. Injection molding may allow each locking mechanism  38  to be configured as a single piece, or several pieces that may then be adhered together. Still further, the arm portions  40 , may comprise of a different material than the base element  46 , and may be added to the base element  46  through adhesion or the base element  46  may be injection molded around the arm portions  40 . 
         [0044]    Alternatively, in lieu of locking tab  110 , U-shaped locking mechanism  38  may include a spring-loaded button  32  with an actuator lever  34  that may traverse the two grooves  51  on the base element  46 . This configuration may allow the user to unlock the U-shaped locking mechanism  38  remotely from the outside. A finger tab  35  may be coupled to actuator lever  34  as illustrated in  FIGS. 12 ,  13 , and  14 . 
         [0045]    In other embodiments, each U-shaped locking mechanism may include a small aperture on each arm portion  40  and a spring-loaded ball plunger recessed inside each small aperture. Each arm portion  40  may include the small apertures for accommodating a spring-loaded ball plunger and a spring-loaded push button. Alternatively, each arm portion  40  may include the small apertures for accommodating the spring-loaded button with the actuator lever with the finger tab as described above. The spring-loaded ball plunger and spring-loaded push button may include various sizes and tensions of spring to accommodate multiple applications. Each small aperture may be positioned on the inside of each of the arm portions  40 , and configured to intersect with the locking apertures  26  of the horizontal cross member  16  of the hemisphere elements  12  when the locking mechanism  38  is fully inserted. In some embodiments, both the small apertures of the arm portions  40  and the locking apertures  26  on the horizontal cross member  16  may be positioned to any location on the arm portions  40  and cross member  16 , while still configured to lock the pair of hemisphere elements  12  together. 
         [0046]      FIG. 4  illustrates an example embodiment for a pair of foot plate attachments  52  that may be attached to the hemisphere elements  12  to provide a lower extremity balancing apparatus. Each of the foot plate attachments  52  includes an arm segment  54 , the spring-loaded push button  30  traversing a small aperture  56  on the arm segment  54 , one or more vertical stay portions  58 , one or more horizontal stay portion  60 , and a foot plate  62 . The spring-loaded push button  30  may be aligned with the locking apertures  26  of the horizontal cross member  16  of the hemisphere elements  12  when the arm segment  54  of the foot plate attachment  52  is fully inserted into the attachment aperture  36  of the horizontal cross member  16  of the hemisphere elements  12 , thus locking it in position. In one embodiment, the small aperture  56  of the arm segment  54  and the locking apertures  26  on the horizontal cross member  16  may be positioned to align at any location on the arm segment  54  and horizontal cross member  16 , while achieving the intended function of locking the foot plate attachments  52  to the hemisphere elements  12 . In one embodiment, the arm segments  54  of the foot plate attachments  52  may be tubular in shape. In further embodiments, the arm segments  54  may be of any shape including triangular, round, square, hexagonal, etc. that may coincide with the shape of the attachment aperture  36  and horizontal cross member  16  of the hemisphere elements  12 . Additionally, the flat grooved surface  18  of the hemisphere element  12  may be configured with a non-skid device plate  102  for accommodating various electronic devices, or may be alternatively used as hand, foot, or elbow placement surface while using the foot plate attachments  52 . The foot plate attachment  52  may be configured to be of varying height from the floor, or alternatively, may be configured to be of adjustable height. 
         [0047]    Alternate embodiments of the foot plate attachment  52  may include variations to the arm segments  54 , vertical stay portions  58 , horizontal stay portions  60 , and foot plates  62 . In further embodiments, the vertical stay portions  58  and the horizontal stay portions  60  may be configured to be of varying lengths. 
         [0048]    In further embodiments, the arm segments  54  may comprise of various lengths and shapes while still completing the intended function of the embodiment. Additionally, the arm segment  54  may comprise of solid material, or alternatively, be a hollow shell, a compartmentalized shell, or a shell filled completely or partially with various materials to increase strength or weight. The arm segments  54  may be configured to spin within the horizontal cross member  16 , or external to the horizontal cross member  16  to provide an alternate level of instability to the foot plate attachment  52 . 
         [0049]    The vertical stay portion  58  may comprise of one or multiple vertical stay portions  58  to add stability to the foot plate attachment. The vertical stay portion  58  may be configured of different shapes including, but not limited to, round, flat, square, triangular, hexagonal, etc. Additionally, the vertical stay portion  58  may comprise of solid material, or alternatively be, a hollow shell, a compartmentalized shell, or a shell filled completely or partially with various materials to increase strength or weight. In some embodiments, the vertical stay portion  58  may comprise of varying lengths, or may be configured to adjust in height to vary the difficulty of the exercise. 
         [0050]    In further embodiments, the horizontal stay portion  60  may comprise of one or multiple horizontal stay portions  60  to add stability to the foot plate attachment  52 . In addition, the horizontal stay portion  60  may be configured of different shapes including, but not limited to, round, flat, square, triangular, hexagonal, etc. Furthermore, the horizontal stay portion  60  may comprise of solid material, or alternatively be a hollow shell, compartmentalized shell, or a shell filled completely or partially with various materials to increase strength or weight. In some embodiments, the horizontal stay portion  60  may comprise of varying lengths, or may be configured to adjust in width for different users. In addition, the horizontal stay portion  60  may comprise of a hand grip accessed through the foot plate  62  to allow the foot plate attachment  52  to be used as a push-up device. 
         [0051]    The foot plate  62  may comprise of different shapes, but not limited to, oval, round, square, rectangular, quadrilateral, anatomical, etc. Additionally, the foot plate  62  may comprise of a solid material, a hollow shell, a compartmentalized shell, or a shell filled completely or partially with various materials to increase strength or weight. In some embodiments, the foot plate  62  may be configured to adjust in length or width to adapt to different users. In further embodiments, the foot plate  62  may comprise of a rigid or semi-rigid material, and may be configured with padded, textured, or aperture surfaces. In some embodiments, the foot plate  62  may be configured to make a continuous concentric ring around the medicine ball configuration  42 . Additionally, the foot plate  62  may be configured to represent various pieces of sporting equipment including, but not limited to a skate board, snow board, surf board, skis, racing wheel, etc. In some embodiments, the foot plate  62  may comprise a hand grip, or series of hand grips, to provide alternate push-up, or upper body stability exercises. 
         [0052]    The foot plate attachments  52  may comprise of, but not limited to, plastic, metal, carbon fiber, or fiberglass material. Additionally, the foot plate attachments  52  may be configured into the shape illustrated in  FIG. 4  by cutting, shaping, welding, compression molding, or injection molding. A separate component may further comprise the foot plate  62 , the arm segment  54 , the vertical stay portion  58 , the horizontal stay portion  60 , and the foot plate  62 . In some embodiments, the vertical stay portion  58 , horizontal stay portion  60 , and foot plate  62  may be configured as a single-piece. Additionally, the components, if made separately, may then be secured together by bolting, welding, carbon fiber wrapping, or some other form of adhesion. The foot plate attachments  52 , may comprise of plastic material, and may be configured to the shape illustrated in  FIG. 4  by injection molding. The arm segment  54 , the vertical stay portion  58 , the horizontal stay portion  60 , and the foot plate  62  may be configured as separate injection molds and conjoined by bolting or other forms of adhesion, or configured as a single injection molded piece. 
         [0053]      FIG. 5  illustrates an example embodiment for the a pair of handle bar attachments  64  that may be attached to the hemisphere elements  12  to allow for a wide grip push-up exercise with the hemisphere elements  12  acting as a single destabilizing fulcrum. The pair of handle bar attachments  64  include a bar portion or shaft portion  66  with a small aperture  68  that may attach the spring-loaded push button  30 , and a padded handle grip  70 . Furthermore, the small aperture  68  with the spring-loaded push button  30  is configured to be aligned with the locking apertures  26  of the horizontal cross member  16  of the hemisphere elements  12 , which may lock the handle bar attachment  64  in place when fully inserted. In addition, the spring-loaded push button  30  may be manually disengaged when the user wishes to remove the pair of handle bar attachments  64 . Although the shaft portion  66  of the handle bar attachments  64  is illustrated in  FIG. 5  as a square tubular shape, the shaft portion  66  may be of any shape including, but not limited to, triangular, square, hexagonal, etc., that may coincide with the shape of the attachment aperture  36  and horizontal cross member  16  of the hemisphere elements  12 , or complete the intended function of the embodiment. Additionally, the flat grooved surface  18  of the hemisphere element  12  may be configured with a non-skid device plate  102  for accommodating various electronic devices, or may be alternatively used as hand, foot, or elbow placement surface while using the handle bar attachments  64 . 
         [0054]    Alternate embodiments for the handle bar attachments  64  may include, but are not limited to, variations in shape or length while still completing the intended function of the embodiment. In some embodiments, the handle bar attachments  64  may be configured to represent various pieces of equipment including, but not limited to, motorcycle handle bars, jet ski handle bars, water sport handle, gymnastics bars, weight lifting bars, martial arts equipment, paddles, racing wheel, ski poles, etc. Additionally, the handle bar attachments  64  may comprise of a rigid or semi-rigid material, and may be configured alternatively, with a textured, padded, or anatomically matching surface. Furthermore, the handle bar attachments  64  may comprise of solid material, or alternatively configured as a hollow shell, a compartmentalized shell, or a shell filled completely or partially with various materials to increase strength or weight. 
         [0055]    Each shaft portion  66  of the handle bar attachments  64  may comprise of but not limited to, metal, plastic, carbon fiber, or fiberglass material. The shaft portion  66  of the handle bar attachments  64 , if made of metal, may be configured by cutting pre-formed metal tubing and adding a spring-loaded push button  30  and padded handle grip  70 . Further, the handle bar attachments  64 , may comprise of carbon fiber, fiberglass, plastic, or other material, and may be compression molded or injection molded, either with or without the small aperture  68 , and then may be drilled for the small aperture  68 , and fitted with the spring-loaded push button  30  and the padded handle grip  70 . The padded handle grip  70  may alternatively comprise of rubber, neoprene, foam, or other padded material. 
         [0056]      FIG. 6  illustrates an example embodiment for a spinning handle bar attachment  72  that may be inserted in the medicine ball configuration  42  to allow for a rolling device. The spinning handle bar attachment  72  traverses the medicine ball configuration  42  through the pair of grooves  120  located on the flat grooved surface  18  of the hemisphere elements  12 . The spinning handle bar attachment  72  may comprise of a pair of handle portions  116  with the padded handle grip  70 , the rod portion  114 , and a pair of washers  136  secured to the rod portion  114  for proper seeding of the spinning handle bar attachment  72  within the flat grooved surface  18 . The medicine ball configuration  42  may be held together by the pair of U-shaped locking mechanisms  38  that may slide over the handle portions  116  by traversing the large centralized aperture  113  of the base element  46  of the U-shaped locking mechanism  38 . The arm portion  40  of the U-shaped locking mechanism may be configured to insert into the attachment aperture  36  of the horizontal cross member  16  and lock the medicine ball configuration  42  together when the pair of locking tabs  110  on spring mechanism  108  of the pair of U-shaped locking mechanisms  38  traverse the locking apertures  26  of the horizontal cross member  16 . The spinning handle bar attachment  72  may be comprised to spin where the rod portion  114  traverses the grooves  120  of the flat grooved surface  18 , where the handle portion  116  connects to rod portion  114 , or both. 
         [0057]    Alternate embodiments for the spinning handle bar attachments  72  may include, but are not limited to, variations to the rod portion  114 , U-shaped locking mechanism  38 , the handle portion  116 , and padded handle grip  70 . 
         [0058]    Alternate embodiments of the rod portion  114  may include, but are not limited to, various lengths, shapes, or textures. The rod portion  114  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc. Further, the rod portion  114  may comprise of a solid material, or alternatively, may be configured as a hollow shell, or a compartmentalized shell, and may be or filled completely or partially with various materials to add strength or weight. Furthermore, the rod portion  114  may comprise of rigid or semi-rigid material and still achieve the intended function of the embodiment. Additionally, the rod portion  114  may comprise of bushings, bearings, liquid membrane, or other means of decreasing friction, located along the length of the rod portion  114  to allow the medicine ball configuration  42  to spin freely on the rod portion  114 . 
         [0059]    The U-shaped locking mechanism  38  may alternatively be configured to attach directly to separate spinning handle bar attachments without use of the rod portion  114 , by means of a bolt attachment through the small centralized aperture of the base element  46  of the U-shaped locking mechanism  38  into the handle portion  116 . The U-shaped locking mechanism  38  may alternatively comprise variations in size and shape of apertures to accommodate variations in locking components or attachment methods for the spinning handle bar attachments  72 . 
         [0060]    Alternate embodiments for the handle portions  116  may include, but are not limited to, the use of ball bearings, or ribbing, or bushings to allow for spinning of the handle portions  116  on the rod portion  114 . The bushings may comprise of materials such as plastic. Additionally, a fluid filled medium, or alternative means of lubrication, may be used to reduce friction of the handle portions  116  to the rod portion  114 , and still meet the intended function of the embodiment. Further, the handle portions  116  may be adhered to the rod portion  114  by means of weld, adhesive, carbon fiber wrap, or other means of adhesion, allowing the spinning action of the spinning handle bar attachment  72  to occur between the rod portion  114  and each groove  120  of the flat grooved surface  18 . Further yet, the handle portion  116  with padded handle grip  70 , rod portion  114 , and pair of washers  136 , may comprise of a single molded piece. Additionally, the handle portions  116  may be secured on the rod portion  114  by a rib portion held within a grooved portion of the rod portion  114 . The handle portion  116  may comprise of various shapes and sizes including, but not limited to, round, square, triangular, hexagonal, anatomical, etc. The handle portion  116  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc., and may be made of a solid material, hollow shell, compartmentalized shell, or filled completely or partially with various materials to add weight or strength. 
         [0061]    The padded handle grip  70  may comprise of various materials including, but not limited to, rubber, neoprene, foam, plastic, etc., and may be of anatomical shape for the hand. 
         [0062]      FIG. 7  illustrates a possible attachment for the present disclosure that may be referred to as a kettlebell handle attachment  82 , named after a commonly understood piece of exercise equipment known as a “kettlebell”. A kettlebell includes a large bell-shaped weight with a gripping handle attached to the top of the weight with room for both hands to grip the handle. The kettlebell handle attachment  82  may comprise of the U-shaped locking mechanism  38  with the alternate large centralized aperture  113  of the base element  46  replacing the small centralized component connection aperture  48  to allow the large bar portion  84  to traverse said base element  46 . The kettle bell handle attachment  82  may further include a large bar portion  84 , a small bar portion  50 , a blocking brace portion  78 , and a holder portion  86  with padded hand grip  88 . The kettlebell handle attachment  82  may be inserted into the medicine ball configuration  42  by placing the small bar portion  50  of the kettlebell handle attachment  82  between the pair of grooves  120  of the flat grooved surface  18  and seeding the two hemisphere elements  12  together. The pair of U-shaped locking mechanisms  38  are locked in position as described in  FIG. 2 , thus securing the two hemisphere elements  12  together in medicine ball configuration  42 . The blocking brace portion  78  is captured inside the pair of large recessed centralized cavities  22  of the medicine ball configuration  42 , thus keeping the kettlebell handle attachment  82  from sliding out of said medicine ball configuration  42 . 
         [0063]    Alternate embodiments for the kettle bell handle attachment  82  may include, but are not limited to, variations to the U-shaped locking mechanism  38 , the large bar portion  84 , the small bar portion  50 , the blocking brace portion  78 , the holder portion  86 , and padded handle grip  70 . 
         [0064]    The U-shaped locking mechanism  38  may be configured to move freely over the large bar portion  84  using the alternate large centralized aperture  113  as illustrated in  FIG. 7 , or attach directly to the large bar portion  84  by means of a bolt, weld, or other form of adhesion. The U-shaped locking mechanism may comprise variations in apertures to accommodate variations in locking components or attachment methods for the kettlebell handle attachment  82 . 
         [0065]    The large bar portion  84  may comprise of various shapes and sizes including, but not limited to, round, square, triangular, hexagonal, etc. The large bar portion  84  may comprise of a texture or smooth surface, and may be rigid, semi-rigid, or pliable. The large bar portion  84  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc., and may be made of a solid material, hollow shell, compartmentalized shell, or filled completely or partially with various material to add weight or strength. The bar portion  84  may be configured to spin through use of a thrust washer, bushing, or other means. The large bar portion  84  may be configured to attach directly to the base element  46  of the U-shaped locking mechanism  38  as illustrated in  FIG. 13 . The large bar portion  84  may comprise of a single molded piece with the small bar portion  50 , blocking brace portion  78 , and holder portion  86 , or comprise a separate piece attached to the holder portion  86 , and small bar portion  50  by means of bolt, screw, weld, carbon fiber wrap, adhesive, or other means of adhesion while still meeting the requirements of the intended embodiment. 
         [0066]    The small bar portion  50  may alternatively comprise of different sizes, shapes, or lengths of bolt while still completing the intended function of the embodiment. The small bar portion  50  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc. Further, the rod portion  114  may comprise of a solid material, or alternatively, may be configured as a hollow shell, or a compartmentalized shell, and may be or filled completely or partially with various materials to add strength or weight. Furthermore, the rod portion  114  may comprise of rigid or semi-rigid material and still achieve the intended function of the embodiment. The small bar portion  50  may be configured to traverse the grooves  120  on the flat grooved surface  18  of the main body elements  14  while in medicine ball configuration  42  as illustrated in  FIG. 7 . The small bar portion  50  may alternately be configured to attach the base element  46  of the U-shaped locking mechanism  38  to the large bar portion  84  of the kettlebell handle attachment  82  as illustrated in  FIG. 13 . The small bar portion  50  may be configured to lock into the pair of grooves  120  of the flat grooved surface  18  with a locking fin portion to prevent spinning of the kettlebell handle attachment  82 , or alternatively spin freely within the pair of grooves  120  of the flat grooved surface  18 . The small bar portion  50  may comprise of a single molded piece with the large bar portion  84 , blocking brace portion  78 , and holder portion  86 , or comprise a separate piece attached to the large bar portion  84 , and blocking brace portion  78  by means of bolt, screw, weld, carbon fiber wrap, adhesive, or other means of adhesion while still meeting the requirements of the intended embodiment. 
         [0067]    The holder portion  86  may alternatively comprise of various shapes and sizes of tubing including, but not limited to, round, square, oval, triangular, hexagonal, etc. Including but not limited to, round, oval, triangular, square, trapezoidal, quadrilateral, linear etc. The holder portion  86  may alternatively comprise of a textured or smooth, or anatomical surface, and may be further configured to be rigid, semi-rigid, or pliable. The holder portion  86  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc., and may be made of a solid material, hollow shell, compartmentalized shell, or filled completely or partially with various material to add weight or strength. The holder portion  86  may be configured to spin through use of a thrust washer, bushing, or other means, in conjunction with large bar portion  84 . The holder portion  86  may comprise of a single molded piece with the large bar portion  84 , small bar portion  50 , and blocking brace portion  78 , or comprise a separate piece attached to the large bar portion  84  by means of bolt, screw, weld, carbon fiber wrap, adhesive, or other means of adhesion while still meeting the requirements of the intended embodiment. 
         [0068]    The padded handle grip  70  may comprise of various materials including, but not limited to, rubber, neoprene, foam, plastic, etc., and may be of anatomical shape for the hand. 
         [0069]      FIG. 8  illustrates a possible variation of the present disclosure referred to as the weight variation system, allowing for the addition and subtraction of additional optional weighted members  156  to each hemisphere element  12 , modifying the stability and difficulty of the apparatus. The weighted variation system may comprise of multiple small recessed lateral cavities  23  within the large recessed centralized cavity  22  of each hemisphere element  12 , lateral spring plates  152  extending from rib cover plate  134 , a pair of retaining edges  160 , and optional weighted members  156 . The small recessed lateral cavities  23  may be configured such that the additional weighted members  156  are inserted into the small recessed lateral cavities  23  and secured in place by the combination of the pair of retaining edges  160  and pressure applied by the lateral spring plates  152 . Additionally, the flat grooved surface  18  of the hemisphere element  12  may be configured with recessed grooves  154  to allow the user better user access for the insertion and removal of the optional weighted members  156 . 
         [0070]    Alternate embodiments of the weight variation system may include, but are not limited to, variations in the small recessed lateral cavities  23 , lateral spring plates  152 , pair of retaining edges  160 , and optional weighted members  156 . 
         [0071]    The small recessed lateral cavities  23  may comprise of one or multiple cavities or various shapes and sizes, including but not limited to, cylindrical, rectangular, square, semi-circular, hexagonal, etc., and may be of various depths and lengths. The small recessed lateral cavities  23  may be of textured or smooth surface. The small recessed cavity may comprise of a continuous molded piece within the large recessed centralized cavity  22 , or of a secondary piece adhered within the large recessed centralized cavity  22  by means of adhesive, weld, screws, carbon fiber wrap, or alternate form of adhesion while still meeting the requirements of the intended embodiment. 
         [0072]    The lateral spring plates  152  may comprise of one or multiple lateral spring plates  152  in relation to the number of small recessed lateral cavities  23 . Each lateral spring plate  152  may be an extension of the rib cover plate  134  as illustrated in  FIG. 8 , a separate piece for each small recessed lateral cavity  23 , or a separate piece comprised of multiple lateral spring plates  152  detached from the rib cover plate  134 . The lateral spring plate  152  may comprise of a solid, semi-rigid, or pliable material, and may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc. The lateral spring plate  152  may alternately consist of a metal or plastic coil spring, or plunger button, while still meeting the requirements of the intended embodiment. The lateral spring plate  152  may be of various tensions. 
         [0073]    The pair of retaining edges  160  may comprise of one or a multiple pair of retaining edges  160  in relation to the number of small recessed lateral cavities  23 . The pair of retaining edges  160  may be of various shapes including, but not limited to, rectangular, square, oval, round, triangular, etc. The pair of retaining edges  160  may comprise of a continuous molded piece within the large recessed centralized cavity  22 , or alternately be comprised of a separate piece adhered within the large recessed centralized cavity  22 , or small recessed lateral cavity  23  by means of adhesive, weld, screws, carbon fiber wrap, or alternate form of adhesion while still meeting the requirements of the intended embodiment. The pair of retaining edges  160  may comprise of a separate piece, such as a rubber or plastic ring that rests inside the large recessed centralized cavity  22  and is not adhered directly to the other parts of the weight variation system. The pair of retaining edges  160  may comprise of a solid, semi-rigid, or pliable material, and may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc. The pair of retaining edges  160  may be of various length or thickness. 
         [0074]    The optional weighted members  156  may comprise of one or multiple optional weighted member in relation to the number of small recessed lateral cavities  23 . The optional weighted members  156  may comprise of various sizes and shapes including, but not limited to, square, round, triangular, cylindrical, hexagonal, etc. The optional weighted members  156  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc., and be of varying weight levels. The optional weighted members  156  may be solid, semi-rigid, or pliable material while still meeting the intended requirements of the embodiment. 
         [0075]      FIG. 9  illustrates an alternate configuration of the pair of hemisphere elements  12  held together by a pair U-shaped locking mechanisms  38 . The rounded outer surfaces  20  of the hemisphere elements  12  may be coated with a rubberized outer molding  140 . The U-shaped locking mechanism  38  may comprise of a pair of medium apertures  112  for accessing the finger tab recessed lever  106 . 
         [0076]      FIG. 10  illustrates an example embodiment showing the conjoining of the two identical hemisphere elements  12 , using a pair of U-shaped locking mechanism  38 , into a single medicine ball configuration  42 . Each locking mechanism may include the pair of arm portions  40 , a small aperture  44  on each arm portion  40 , the spring-loaded ball plunger  28  recessed inside each said small apertures  44 , and a base element  46  with a centralized component connection aperture  48  for accommodating an attachment bolt, and two grooves  51  that may allow access to inside of each of the arm portions  40 . Each spring-loaded ball plunger  28  may be replaced with the spring-loaded button  32  with the actuator lever  34  that may traverse the grooves  51  on the base element  46  as illustrated in  FIGS. 12 ,  13  and  14 . This configuration may allow the user to unlock the U-shaped locking mechanism  38  remotely from the outside. 
         [0077]      FIG. 11  illustrates an alternative embodiment for a pair of foot plate attachments  52  that may be attached to the hemisphere elements  12  to provide a lower extremity balancing apparatus. Each of the foot plate attachments  52  includes an arm segment  54 , the spring-loaded push button  30  traversing a small aperture  56  on the arm segment  54 , a vertical stay portion  58 , a horizontal stay portion  60 , and a foot plate  62 . The spring-loaded push button  30  may be aligned with the locking apertures  26  of the horizontal cross member  16  of the hemisphere elements  12  when the arm segment  54  of the foot plate attachment  52  is fully inserted into the attachment aperture  36  of the horizontal cross member  16  of the hemisphere elements  12 , thus locking it in position. In one embodiment, the small aperture  56  of the arm segment  54  and the locking apertures  26  on the horizontal cross member  16  may be positioned to align at any location on the arm segment  54  and horizontal cross member  16 , while achieving the intended function of locking the foot plate attachments  52  to the hemisphere elements  12 . In one embodiment, the arm segments  54  of the foot plate attachments  52  may be tubular in shape. In further embodiments, the arm segments  54  may be of any shape including triangular, square, hexagonal, etc. that may coincide with the shape of the attachment aperture  36  and horizontal cross member  16  of the hemisphere elements  12 . 
         [0078]      FIG. 12  illustrates an alternative embodiment for spinning handle bar attachment  72 . Each spinning handle bar attachment  72  may include the U-shaped locking mechanism  38  as described above in  FIGS. 2 and 3 , an small bar portion  50 , a thrust bearing  74 , and a bar portion  76  with the padded handle grip  70 . As illustrated in  FIG. 6 , the bar portion  76  may include a blocking brace portion  78  or similar insert adhered into the proximal end to include the small bar portion  50 . The bar portion  76 , may alternatively comprise of plastic, carbon fiber, fiberglass, or other material, and may be molded with the equivalent of a washer, or insert, for the acceptance of the small bar portion  50 . The bar portion  76  may be attached to the U-shaped locking mechanism  38  by inserting the small bar portion  50  through the centralized component connection aperture  48  of the base element  46 , through the thrust bearing  74 , then through the blocking brace portion  78  of the bar portion  76  and secured by placing the locking nut  80  at the end of the small bar portion  50 . 
         [0079]    The spinning handle bar attachment  72  may be configured to spin on the small bar portion  50  by placing the thrust bearing  74 , and not securing the locking nut  80  so tight as to prevent spinning of the bar portion  76  on the small bar portion  50 . Alternatively, the small bar portion  50  may be threaded along the entirety of the bolt, or only at the end for the attachment of the locking nut  80 . 
         [0080]    Alternate embodiments for the spinning handle bar attachment  72  may include, but are not limited to, variations to the U-shaped locking mechanism  38 , the small bar portions  50 , the bar portion  76 , and padded handle grip  70 . 
         [0081]    The U-shaped locking mechanism  38  may alternatively be configured to attach directly to the spinning handle bar attachment  72  or remain unattached from the spinning handle bar attachment  72 . The U-shaped locking mechanism  38  may alternatively comprise variations in size and shape of apertures to accommodate variations in locking components or attachment methods for the spinning handle bar attachment  72 . 
         [0082]    The small bar portions  50  may comprise of different sizes, shapes, or lengths of bolt while still completing the intended function of the embodiment. Additionally, the small bar portions  50  may be configured to lock in place, or spin freely within the base element  46  of the U-shaped locking mechanism  38 . 
         [0083]    The bar portion  84  may comprise of various shapes and sizes including, but not limited to, round, square, triangular, hexagonal, anatomical, etc. The bar portion  84  may comprise of a texture or smooth surface, and may be rigid, semi-rigid, or pliable. The bar portion  84  may comprise of various materials including plastic, metal, fiberglass, carbon fiber, etc., and may be made of a solid material, hollow shell, compartmentalized shell, or filled completely or partially with various materials to add weight or strength. 
         [0084]    The padded handle grip  70  may comprise of various materials including, but not limited to, rubber, neoprene, foam, plastic, etc., and may be of anatomical shape for the hand. Possible manufacturing techniques for the bar portion  76  of the spinning handle bar attachment  72  are the same as those described above for the shaft portion  66  of the handle bar attachment  64  described above in detail for  FIG. 5 . The bar portion  76  is depicted as having a blocking brace portion  78 , or similar insert, adhered by welding into the proximal end to accept the small bar portions  50 . The bar portion  76 , may comprise of plastic, carbon fiber, fiberglass, or other material, and may be molded with the equivalent of a washer, or insert for the acceptance of the small bar portions  50 . The small bar portions  50 , the thrust bearing  74 , the blocking brace portion  78  and the locking nut  80  are all common items available in the marketplace. The padded handle grip  70  may comprise of rubber, neoprene, foam, plastic, or other material. 
         [0085]      FIG. 13  illustrates a partially exploded view of an alternate embodiment for kettle bell handle attachment  82  where small bar portion  50  may comprise an small bar portion. The bar portion  84  is depicted as having the blocking brace portion  78 , washer, or similar insert adhered into the proximal end to accept the small bar portion  50 . The large bar portion  84  may be attached to the U-shaped locking mechanism by inserting the small bar portion  50  through the centralized component connection aperture  48  of the base element  46 , then through the blocking brace portion  78  of the bar portion  84  and secured by placing the locking nut  80  at the end of the small bar portion  50 . In alternative configurations, large bar portion  50  may be configured such that small bar portion  50  may thread directly into large bar portion  50 . In other embodiments, kettle bell handle attachment  82  may be configured such that small bar portion  50  may thread through a retaining or locking plate/washer and spacer or sleeve portion before threading into large bar portion  84 . In this embodiment, the U-shaped locking mechanism may be located between the locking plate/washer and large bar portion  84 . 
         [0086]      FIG. 14  illustrates an enlarged, cross-sectioned view of the U-shaped locking mechanism  38  as described in  FIG. 2 , including the spring-loaded button  32 , the actuator lever  34 , and the finger tab  35  inside of the arm portions  40 . The actuator lever or arms  34  exit the base element  46  through the two grooves  51  allowing the user to disengage the spring-loaded button  32  remotely from the outside of the U-shaped locking mechanism  38 . Possible manufacturing techniques for the locking mechanism  38  discussed above in detail for  FIG. 2 , apply here as well. The spring-loaded button  32  and the actuator lever  34  may comprise of metal, spring metal, plastic, or other material that retains its shape. The finger tab  35  may alternatively comprise of plastic, metal, or other material, and may be configured in various shapes. 
         [0087]      FIG. 15  shows a front view of a single hemispherical push-up exercise device with an alternate configuration of the foot plate attachments. In this configuration, hemisphere element  12  includes foot plate attachments  52  with a possible height dimension from the bottom of the foot plate attachments  52  to a floor. The foot plate attachment  52  may be configured to be of varying height from the floor, or alternatively, may be configured to be of adjustable height. 
         [0088]      FIG. 16  illustrates of a pair of hemisphere elements  12  held together by a cross bar attachment  146 , forming an alternate embodiment of push-up or balance exercise device. The cross bar attachment  146  may be inserted into each horizontal cross member  16  of the hemisphere elements  12  through the attachment aperture  36 , and locked into position by the spring-loaded push button  30 . The cross bar attachment  146  may be configured to be of various lengths. The cross bar attachment  146  may comprise of various shapes including, but not limited to, round, square, triangular, hexagonal, etc. Additionally, the cross bar attachment  146  may comprise of a solid material, or alternatively of a hollow shell, a compartmentalized shell, or be filled completely or partially with various materials to add weight or strength. The cross bar attachment  146  may alternatively comprise of a rigid, semi-rigid, or flexible material. Additionally, the cross bar attachment  146  may be configured to be of various textures or padded hand grips, or be configured with anatomically correct hand grips. 
         [0089]    Thus a transformable exercise apparatus is described that allows the user to perform various upper and lower body strength and stability exercises using one primary piece of equipment. The disclosure provides an exercise device where the exercises are performed on curved surface, which is inherently less stable, and requires the user to use more neuro-muscular control while the exercises are performed. The device allows for multiple attachments to be added, providing various challenges to the user for both upper and lower body segments. Each hemisphere may be used independently as push-up devices or dumbbells, and may be manufactured of different weights for different levels of user strength. The hemispheres also have the advantage of being locked together to form a weighted medicine ball, which may also aid for easier storage. It is to be understood that the present disclosure is not limited to the embodiments described above, but encompasses any and all the embodiments within the scope of the claims. 
         [0090]    As described above, for illustration purposes and not as a limitation, an exercise device is disclosed with a first hemisphere element having a first recessed cavity with a first horizontal cross member traversing the first cavity, a second hemisphere element having a second recessed cavity with a second horizontal cross member traversing the second cavity, and a locking mechanism to lock the first hemisphere to the second hemisphere in a locked ball configuration. The locking mechanism may be positioned such that it is flush with an outer surface of the device when in a locked ball configuration. The first hemisphere may further have a first opening and the second hemisphere may have a second opening, where the first opening and second opening are positioned to receive the locking mechanism in the locked ball configuration. The first hemisphere may have a first interlocking surface and the second hemisphere may have a second interlocking surface where the first interlocking surface and second interlocking surface engage in the locked ball configuration. In some examples, the first interlocking surface and the second interlocking surface may be grooved surfaces. 
         [0091]    In some examples, the locking mechanism may be a U-shaped locking mechanism. The U-shaped locking mechanism may include a first arm portion to extend into a first opening of the first hemisphere and a second arm portion to extend into a second opening of the second hemisphere. Further, the locking mechanism may include at least one actuator lever and/or at least one component connection aperture. Additional features and components are described above. 
         [0092]    It is to be understood that the configurations and/or approaches described herein are exemplary in nature, and that these specific embodiments or examples are not to be considered in a limiting sense, because numerous variations are possible. The subject matter of the present disclosure includes all novel and nonobvious combinations and sub combinations of the various configurations, and other features, functions, and/or properties disclosed herein.