Patent Publication Number: US-11642564-B2

Title: Exercise machine

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 16/780,765, filed Feb. 3, 2020, which claims the benefit of and priority to U.S. Provisional Patent Application No. 62/804,146, filed Feb. 11, 2019, each of which is incorporated herein by reference in its entirety for all that it discloses. 
    
    
     BACKGROUND 
     A cable exercise machine is a popular piece of exercise equipment for improving muscular definition and strength. Some benefits of a cable exercise machine are that it may enable a user to easily isolate muscles. However, use of a cable exercise machine may result in individual muscles becoming stronger while other muscles are left weak. This may be due to the cable exercise machine adjusting, balancing, and supporting the user&#39;s body, resulting in weaker muscles that would normally do these tasks in real life. 
     Free weights are also popular for improving muscular definition and strength. In contrast to using a cable exercise machine, using free weights tends to require a user to use more than one muscle group for each exercise, and may generally result in less muscle isolation. 
     The subject matter claimed herein is not limited to embodiments that solve any disadvantages or that operate only in environments such as those described above. Rather, this background is only provided to illustrate one example technology area where some embodiments described herein may be practiced. 
     SUMMARY 
     In one aspect of the disclosure, an exercise machine may include a frame, a resistance mechanism supported by the frame, a first pull cable and a second pull cable supported by the frame and linked to the resistance mechanism, and a power rack attached to the frame. The power rack may include a first upright post configured to have a first barbell holder adjustably attached thereto and a second upright post configured to have a second barbell holder adjustably attached thereto. The first barbell holder may be adjusted in various positions between a first highest position and a first lowest position on the first upright post. The second barbell holder may also be adjusted in various positions between a second highest position and a second lowest position on the second upright post. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include a first tensioner spring configured to reduce slack in the first pull cable, and a second tensioner spring configured to reduce slack in the second pull cable. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to assist a user in lifting the barbell, and a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to assist the user in lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the first tensioner spring being configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force assisting the user in lifting the barbell, and the second tensioner spring being configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force assisting the user in lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include a first tensioner spring configured to reduce slack in the first pull cable, a second tensioner spring configured to reduce slack in the second pull cable, a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to hinder a user in lifting the barbell, and a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to hinder the user in lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the first tensioner spring being configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force hindering the user in lifting the barbell, and the second tensioner spring being configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force hindering the user in lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the resistance mechanism being configured to be selectively set at one of multiple resistance levels, and the first pulley and the second pulley enabling the resistance mechanism to hinder the user in lifting the barbell in proportion to the set resistance level of the resistance mechanism. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the resistance mechanism including a flywheel and one or more magnets arranged to selectively resist rotation of the flywheel. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the resistance mechanism including a motor. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include a motor supported by the frame and linked to the first pull cable and to the second pull cable, a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the motor to assist a user in lifting the barbell, and a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the motor to assist the user in lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the power rack further including a pull-up bar supported by the first upright post and by the second upright post. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the power rack further including a first weight plate holder supported by the first upright post, and a second weight plate holder supported by the second upright post. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the first barbell holder and the second barbell holder being configured as spotter arms to prevent a barbell from falling on a user if the user is unable to continue lifting the barbell. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include one or more dumbbell racks supported by the frame and each configured to hold a dumbbell. 
     In another aspect of the disclosure, an exercise machine may include a frame, a resistance mechanism supported by the frame, a first pull cable and a second pull cable supported by the frame and linked to the resistance mechanism, and a bottom-out mechanism configured to prevent the first pull cable and the second pull cable from being fully extended. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the bottom-out mechanism including a first visual indicator on the first pull cable and a second visual indicator on the second pull cable. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the bottom-out mechanism including a sensor configured to trigger when one or more of the first pull cable and/or the second pull cable has been extended to within a threshold of being fully extended, a user has moved past a threshold distance from the exercise machine, or a barbell has moved past a threshold distance from the exercise machine. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the bottom-out mechanism further including an alarm configured, in response to the sensor triggering, to alert the user of a danger of the first pull cable and/or the second pull cable being fully extended. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the bottom-out mechanism further including one or more brakes configured, in response to the sensor triggering, to engage the first pull cable and/or the second pull cable to prevent the first pull cable and/or the second pull cable from being fully extended. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the sensor including one or more of an optical sensor, a magnetic sensor, a camera sensor, or an infrared sensor. 
     Another aspect of the disclosure may include any combination of the above-mentioned features and may further include the exercise machine further including a power rack attached to the frame and configured to have a first barbell holder and a second barbell holder adjustably attached thereto, the exercise machine further including a first tensioner spring configured to reduce slack in the first pull cable, the exercise machine further comprises a second tensioner spring configured to reduce slack in the second pull cable, the exercise machine further including a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to assist a user in lifting the barbell, the exercise machine further including a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to assist the user in lifting the barbell, and the bottom-out mechanism being further configured to prevent the first pull cable and the second pull cable from being fully extended to avoid a user of the barbell, with the first pull cable and the second pull cable selectively attached thereto, from being prevented from moving a muscle group through a full range of motion while lifting the barbell. 
     It is to be understood that both the foregoing summary and the following detailed description are explanatory and are not restrictive of the invention as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings in which: 
         FIGS.  1 A- 1 E  are front-right, front, right, rear, and top views, respectively, of an example cable and power rack exercise machine; 
         FIGS.  2 A- 2 C  illustrate a user preparing to lift, lifting, and squatting with a barbell using the example cable and power rack exercise machine of  FIGS.  1 A- 1 E ; and 
         FIGS.  3 A- 3 C  illustrate a user preparing to lift, lifting, and lowering a barbell using the example cable and power rack exercise machine of  FIGS.  1 A- 1 E . 
     
    
    
     Throughout the drawings, identical reference numbers designate similar, but not necessarily identical, elements. 
     DETAILED DESCRIPTION 
     Some embodiments disclosed herein include a cable and power rack exercise machine. For example, the example exercise machine disclosed herein may combine features of a cable machine and features of a power rack to yield a superior exercise machine where cables of the exercise machine can be attached to a barbell to assist the user in performing a workout with the barbell. This assistance may come in the form of making the barbell easier to lift or harder to lift, depending on the desired effect. The exercise machine may also include certain bottom-out features that prevent the cables from being fully extended in order to maintain the effective assistance of the cables while pulling on the cables alone or when the cables are attached to the barbell. In this manner, the example exercise machine disclosed herein may enable a user to perform both cable exercises as well as free weight exercises. 
     Turning now to the drawings,  1 A- 1 E are front-right, front, right, rear, and top views, respectively, of an example cable and power rack exercise machine. The exercise machine  100  may include a frame  102 , a resistance mechanism  104  supported by the frame  102 , and pull cables  106   a - 106   f  supported by the frame  102  and linked to the resistance mechanism  104 , and a power rack  108  attached to the frame  102 . 
     The frame  102  may be supported by a base that may include left and right legs  110   a  and  110   b  and left and right lower supports  112   a  and  112   b . The frame may also include left and right upper supports  114   a  and  114   b.    
     The resistance mechanism  104  may include a flywheel  116  and one or more magnets  118  arranged to selectively resist rotation of the flywheel  116  (which may be either permanent magnets configured to be repositioned or electromagnets configured to have magnetic strength adjusted). The pull cables  106   a - 106   f  may have handles  120   a - 120   f  attached thereto, respectively, such that a user can pull on any of the pull cables  106   a - 106   f  by pulling on the corresponding handle  120   a - 120   f . The pull cables  106   a - 106   f  may be linked to the resistance mechanism  104 , via multiple pulleys, spools, other cables, etc, such that the resistance mechanism  104  can apply a set level of resistance to a user pulling on any one of the pull cables  106   a - 106   f . The level of resistance applied by the resistance mechanism  104  may be at least partially controlled by a console  122 , and/or may be at least partially controlled by a tablet  124   a  or  124   b  that is in wired or wireless communication (e.g., Bluetooth communication) with the console  122 . 
     The pull cables  106   a - 106   f  may be further linked to left and right tensioner springs  125   a  and  125   b  that are configured to reduce slack in the pull cables  106   a - 106   f . More particularly, the left tensioner spring  125   a  may be configured to reduce slack in the left-side pull cables  106   a ,  106   c , and  106   e , while the right tensioner spring  125   b  may be configured to reduce slack in the right-side pull cables  106   b ,  106   d , and  106   f . For example, after a user pulls on one of the pull cables  106   a - 106   f , the left tensioner spring  125   a  or the right tensioner spring  125   b  may be configured to retract the pull cable back to its fully-retracted position. 
     The power rack  108  may include left and right upright posts  126   a  and  126   b  that are attached to the frame  102  via the left and right lower supports  112   a  and  112   b  and the left and right upper supports  114   a  and  114   b , respectively. The left and right upright posts  126   a  and  126   b  may be configured to have left and right barbell holders  128   a  and  128   b , respectively, adjustably attached thereto. The left and right barbell holders  128   a  and  128   b  may be adjusted in various positions between left and right highest positions  130   a  and  130   b  and left and right lowest positions  132   a  and  132   b  on the left and right upright posts  126   a  and  126   b , respectively. The left and right upright posts  126   a  and  126   b  may be configured to have left and right spotter arms  134   a  and  134   b , respectively, adjustably attached thereto. The left and right spotter arms  134   a  and  134   b  may also be adjusted in various positions between the left and right highest positions  130   a  and  130   b  and the left and right lowest positions  132   a  and  132   b  on the left and right upright posts  126   a  and  126   b , respectively. The left and right barbell holders  128   a  and  128   b  and/or the left and right spotter arms  134   a  and  134   b  may be configured to prevent a barbell  135  from falling on a user if the user is unable to continue lifting the barbell  135 . 
     The power rack  108  may further include a pull-up bar  136  supported by the left and right upright posts  126   a  and  126   b . The pull-up bar  136  may be configured to allow a user to perform pull-ups on the power rack  108 . The power rack  108  may further include left and right upper pulleys  138   a  and  138   b  supported by the pull-up bar  136  and left and right lower pulleys  140   a  and  140   b  supported by the left and right legs  110   a  and  110   b , respectively. The power rack  108  may further include left and right weight plate holders  142   a  and  142   b  supported by the left and right upright posts  126   a  and  126   b  configured for storage of weight plates, such as the weight plate  143 . The power rack  108  may further include dumbbell racks  144   a - 144   d  supported by the frame  102  and each configured to hold a dumbbell (not shown). 
     The exercise machine  100  may further include a tablet holder  146  configured to hold the tablet  124   a , or to hold a second tablet  124   b , so that when the user is faced away from the console  122 , and/or from the tablet  124   a  mounted above the console  122 , the user may continue to view a tablet connected to the console  122  of the exercise machine  100 , and to control the exercise machine  100  using the tablet, without having to turn around. 
     The exercise machine  100  may further include a barbell retention device (see  FIG.  1 C ). The barbell retention device may include a tube  135   a  attached to the frame  102  and configured to be large enough in diameter to receive one end of the barbell  135  (or another barbell) when a user desires to store the barbell  135   a  because it is not currently in use. The barbell retention device may additionally or alternatively include a strap  135   b  attached to the frame  102  and configured to wrap around the other end of the barbell  135  (or another barbell) to keep the barbell  135  securely positioned against the frame  102 . The strap  135   b  may be a buckle strap, a hook and loop strap, or any other type of strap. 
     The exercise machine  100  may further include a bottom-out mechanism configured to prevent the pull cables  106   a - 106   f  from being fully extended, also known as bottoming-out or dead-ending. For example, this bottom-out mechanism may include left and right sensors  148   a  and  148   b  positioned on the left and right legs  110   a  and  110   b , respectively. The left and right sensors  148   a  and  148   b  may include one or more of an optical sensor, a magnetic sensor, a camera sensor, or an infrared sensor, or some other sensor. The left and right sensors  148   a  and  148   b  may be configured to trigger when any of the pull cables  106   a - 106   f  has been extended to within a threshold of being fully extended (e.g., within 2 feet of being fully extended), when a user has moved past a threshold distance from the exercise machine  100  (such as past the line  150 ), or when a barbell (such as the barbell  135 , which may be a standard Olympic 44-pound or 45-pound barbell) has moved past a threshold distance (such as past the line  150 ) from the exercise machine  100 , among other triggering events. In response to the triggering of the left and right sensors  148   a  and  148   b , an alarm may alert the user of a danger of any of the pull cables  106   a - 106   f  being fully extended, or the danger of some other event. 
       FIGS.  2 A- 2 C  illustrate a user  180  preparing to lift, lifting, and squatting with the barbell  135  using the example cable and power rack exercise machine  100  of  FIGS.  1 A- 1 E . As illustrated in  FIGS.  2 A- 2 C , the left and right lower pulleys  140   a  and  140   b  may be configured to selectively receive the pull cables  106   e  and  106   f , respectively, after the handles  120   e  and  120   f  have been detached therefrom, in order to enable the pull cables  106   e  and  106   f  to be selectively attached to the barbell  135 . This selective attachment of the pull cables  106   e  and  106   f  to the barbell  135  in this manner may enable the left and right tensioner springs  125   a  and  125   b  (see  FIG.  1 D ) to hinder the user  180  in lifting the barbell  135 . For example, the left and right tensioner springs  125   a  and  125   b  may each include a spring constant of a particular value of pounds of force per inch (lbf/in). The spring constant may be configured to provide a particular amount of force hindering the user  180  when lifting the barbell  135  as disclosed in  FIGS.  2 A- 2 C . For example, the left and right tensioner springs  125   a  and  125   b  may be configured to provide a hindering force between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds hindering the user  180  when lifting the barbell  135  as disclosed in  FIGS.  2 A- 2 C . This force hindering the user  180  may change the more the left and right tensioner springs  125   a  and  125   b  are stretched, following a load versus deflection curve. As disclosed in  FIGS.  2 A- 2 C , the force hindering the user  180  may increase as the user  180  lifts the barbell  135  (because the left and right tensioner springs  125   a  and  125   b  become increasingly stretched), and may decrease as the user  180  lowers the barbell  135  (because the left and right tensioner springs  125   a  and  125   b  become decreasingly stretched). In this manner, the left and right tensioner springs  125   a  and  125   b  may hinder the user  180  most when the barbell  135  is at its highest point and when the user  180  may desire hindrance most due to the user  180  having the most amount of leverage. Further, the resistance mechanism  104  may be configured to be selectively set at one of multiple resistance levels, using the console  122  and/or the tablet  124   a  or  124   b  for example, and the selective attachment of the pull cables  106   e  and  106   f  to the barbell  135  via the left and right lower pulleys  140   a  and  140   b  may further enable the resistance mechanism  104  to hinder the user  180  in lifting the barbell  135  in proportion to the set resistance level of the resistance mechanism  104 . 
       FIGS.  3 A- 3 C  illustrate a user preparing to lift, lifting, and lowering a barbell using the example cable and power rack exercise machine  100  of  FIGS.  1 A- 1 E . As illustrated in  FIGS.  3 A- 3 C , the left and right upper pulleys  138   a  and  138   b  may be configured to selectively receive the pull cables  106   a  and  106   b , respectively, after the handles  120   a  and  120   b  have been detached therefrom, in order to enable the pull cables  106   a  and  106   b  to be selectively attached to the barbell  135 . This selective attachment of the pull cables  106   a  and  106   b  to the barbell  135  in this manner may enable the left and right tensioner springs  125   a  and  125   b  (see  FIG.  1 D ) to assist the user  180  in lifting the barbell  135 . For example, the left and right tensioner springs  125   a  and  125   b  may each include a spring constant of a particular value of pounds of force per inch (lbf/in). The spring constant may be configured to provide a particular amount of force assisting the user  180  when lifting the barbell  135  as disclosed in  FIGS.  3 A- 3 C . For example, the left and right tensioner springs  125   a  and  125   b  may be configured to provide an assisting force between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds assisting the user  180  when lifting the barbell  135  as disclosed in  FIGS.  3 A- 3 C . This force assisting the user  180  may change the more the left and right tensioner springs  125   a  and  125   b  are stretched, following a load versus deflection curve. As disclosed in  FIGS.  3 A- 3 C , the force assisting the user  180  may increase as the user  180  lowers the barbell  135  (because the left and right tensioner springs  125   a  and  125   b  become increasingly stretched), and may decrease as the user  180  lifts the barbell  135  (because the left and right tensioner springs  125   a  and  125   b  become decreasingly stretched). In this manner, the left and right tensioner springs  125   a  and  125   b  may assist the user  180  most when the barbell  135  is at its lowest point and when the user  180  may desire assistance most due to the user  180  having the least amount of leverage. 
     INDUSTRIAL APPLICABILITY 
     In general, the example exercise machine disclosed herein may combine features of a cable machine and features of a power rack to yield a superior exercise machine where a user can perform cable workouts, free weight workouts, or combined workouts. In a combined workout, the cables of the exercise machine may be attached to a barbell to assist the user in performing a workout with the barbell by either making the barbell easier to lift or harder to lift, depending on the desired effect. The exercise machine may also include certain bottom-out features that prevent the cables from being fully extended in order to maintain the effective assistance of the cables, while pulling on the cables alone, or when using the cables while attached to the barbell. 
     The exercise machine disclosed herein may be employed to perform a high-intensity lifting workout, a cardio building workout, or a high intensity interval training (HIIT) workout, or some combination thereof. The exercise machine may be employed at a gym or in a home setting. 
     Various modifications to the example exercise machine disclosed above will now be disclosed. 
     Although the example exercise machine disclosed herein includes six pull cables, in some embodiments as few as two pull cables or more than six pull cables may be included. Further, pull cables may be positioned at positions other than those illustrated in the drawings. 
     Further, although tensioner springs are disclosed herein, in some embodiments the tensioner springs may be replaced with any other mechanism that is configured to reduce slack in pull cables, such as elastic cords, counterweights, or other types of springs. In these embodiments, the other mechanism that is configured to reduce slack in pull cables may continue to function as described above in connection with the barbell to either make lifting the barbell easier to lift or harder to lift, depending on the desired effect. 
     Also, although the resistance mechanism disclosed herein includes a flywheel and one or more magnets arranged to selectively resist rotation of the flywheel, in some embodiments the resistance mechanism may instead include another type of brake (with or without a flywheel), a motor, weights, or other structure(s) capable of providing resistance to pull cables linked thereto. In the case of a motor, the resistance mechanism may double as both a resistance mechanism as well as a mechanism that affirmatively pulls on the pull cables with a set amount of force. In this case, the motor may be attached to a barbell, and may be controlled by a console or other controller to pull on the barbell pull cable(s) upon a command (e.g., a verbal command) of a user, or upon a torque sensor, motion sensor, or other sensor noticing that the user is unable to lift the barbell without some assistance, thus functioning as a virtual spotter to assist the user in lifting the barbell and thus replacing a human spotter. Further, where the resistance mechanism is used to make lifting the barbell harder, the console may be configured to control the resistance mechanism such that the resistance on the barbell gets progressively harder, or progressively easier, to enhance the lifting of the barbell. For example, the resistance mechanism can be controlled to assist a user in lifting the barbell during the final few reps in a set. Alternatively or additionally, the resistance mechanism can be controlled to provide progressive resistance by providing a digital chain that increases the resistance on the barbell with each lift. 
     Further, although the bottom-out mechanism disclosed herein includes sensors positioned on left and right legs of the exercise machine, in some embodiments the bottom-out mechanism sensors may be positioned anywhere else on the exercise machine, or may be positioned on a separate device in communication with the console of the exercise machine. Further, although the bottom-out mechanism disclosed herein includes sensors, in some embodiments the sensors may be replaced with visual indicators on the pull cables themselves, such as where a pull cable transitions from one color to another, or has another visual marking, when the cable is within a threshold (e.g., within 2 feet) of being fully extended. Also, the bottom-out mechanism disclosed herein may further include one or more brakes configured, in response to a sensor triggering, to engage the pull cables to prevent the pull cables from being extended past some threshold of being fully extended. This brake may prevent a user from pulling a pull cable too far away from the exercise machine. 
     Also, although the console disclosed herein is discussed as having functionality capable of adjusting the resistance on the resistance mechanism, in some embodiments the console may further be configured with computer functionality to receive input from the user and provide output to the user, and/or configured to control the exercise machine. For example, the console may be employed in connection with the resistance mechanism discussed above in order to allow the user to manually or programmatically alter the amount of resistance that the resistance mechanism applies during the course of a workout on the exercise machine. The console may be configured to communicate over a network (e.g. a Bluetooth network, a WiFi network, or the Internet) with other similar exercise machines, with servers, with computing devices of personal trainers, and with sensors such as heart rate and respiration sensors, etc. Further, the console may be capable of downloading and uploading data in order to, for example, download and upload workouts, data gathered at the exercise machine, and data gathered at other exercise machines, etc. The console may enable a user of the exercise machine to compete with a user of another similar or dissimilar exercise machine, that is local to or remote from the user, with the competing users competing in real-time or at different times. Further, the console may be configured to track the amount of resistance provided by the resistance mechanism, and the number or rotations of the flywheel, during a workout in order to compute the number of calories burned, the amount of energy expended, the amount of work performed, or any other metric or statistic desired by the user. Further, the console may be configured to track the number of cable pulls, the number of barbell lifts and weight lifted, the number of dumbbell lifts and weight lifted, and any other exercise performed in connection with the exercise machine in order to track the number of calories burned, the amount of energy expended, the amount of work performed, or any other metric or statistic desired by the user during a workout using the exercise machine. Further, all data tracked or downloaded by the console may be presented to the user on a display of the console or on a display of another device, such as a tablet or smartphone that is connected via Bluetooth with the console. Further, the console, or another device connected to the console, may be configured to guide a user through a workout using the exercise machine. This guidance may be audible guidance, visual guidance, or some combination of the two, including guidance that employs video depicting exactly what a user should do to follow the workout. In this manner, a user can have the benefit of a trainer without a human trainer present. Further, this guidance may include using lasers or other projected visual indicators to assist a user in performing a workout properly. For example, lasers may be employed to show a user where to place their feet, to show a user how far to pull a pull cable, to show a user how to properly position their hips, knees, joints, head, shoulders, or any other body part to properly perform a cable or free weight exercise. Further, the console may be configured to function as a real-time live video interface to a human trainer who can guide a user through a workout on the exercise machine without the human trainer being present. Further, live or pre-recorded workout sessions may be displayed on the console, or another connected device, such as live studio sessions, powerlifting sessions, full-body sculpting sessions, and world-class coaching sessions. Further, the console may be configured such that a remote trainer, a live video feed, or a pre-recorded video feed or workout can control the resistance or other parameters of the exercise machine. Also, the console may be configured with multiple user profiles to store preferences and other settings for more than one user. 
     In addition to the accessories disclosed above, in some embodiments the exercise machine may further include other accessories, such as dumbbells, kettlebells, a barbell holder attached to the frame or the power rack for storage of the barbell, an adjustable weight bench for performing weight lifting exercise while lying down, sitting, or somewhere in between lying down or sitting, and a rower attachment that may be connected to one of the pull cables to allow the exercise machine to be used as a rowing machine by a user. 
     Additionally or alternatively, any of the example components disclosed herein in connection with the exercise machine may be moved from generally mirrored left-and-right positions to other positions, such as non-mirrored positions or center positions. For example, instead of left and right pulleys, a single center pulley may be employed in some situations. In another example, more than two pulleys may function similarly to the left and right pulleys disclosed in the drawings. Therefore, the terms “left” and “right” as disclosed herein are for convenience only and are not intended to dictate generally mirrored left-and-right positions of components. 
     In accordance with common practice, the various features illustrated in the drawings may not be drawn to scale. The illustrations presented in the present disclosure are not meant to be actual views of any particular apparatus (e.g., device, system, etc.) or method, but are merely example representations that are employed to describe various embodiments of the disclosure. Accordingly, the dimensions of the various features may be arbitrarily expanded or reduced for clarity. In addition, some of the drawings may be simplified for clarity. Thus, the drawings may not depict all of the components of a given apparatus (e.g., device) or all operations of a particular method. 
     Terms used herein and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including, but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes, but is not limited to,” etc.). 
     Additionally, if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to embodiments containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. 
     In addition, even if a specific number of an introduced claim recitation is explicitly recited, it is understood that such recitation should be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” or “one or more of A, B, and C, etc.” is used, in general such a construction is intended to include A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B, and C together, etc. For example, the use of the term “and/or” is intended to be construed in this manner. 
     Further, any disjunctive word or phrase presenting two or more alternative terms, whether in the summary, detailed description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” should be understood to include the possibilities of “A” or “B” or “A and B.” 
     Additionally, the use of the terms “first,” “second,” “third,” etc., are not necessarily used herein to connote a specific order or number of elements. Generally, the terms “first,” “second,” “third,” etc., are used to distinguish between different elements as generic identifiers. Absence a showing that the terms “first,” “second,” “third,” etc., connote a specific order, these terms should not be understood to connote a specific order. Furthermore, absence a showing that the terms first,” “second,” “third,” etc., connote a specific number of elements, these terms should not be understood to connote a specific number of elements. For example, a first widget may be described as having a first side and a second widget may be described as having a second side. The use of the term “second side” with respect to the second widget may be to distinguish such side of the second widget from the “first side” of the first widget and not to connote that the second widget has two sides. 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention as claimed to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described to explain practical applications, to thereby enable others skilled in the art to utilize the invention as claimed and various embodiments with various modifications as may be suited to the particular use contemplated. 
     A. An exercise machine comprising: 
     a frame; 
     a pull cable supported by the frame; and 
     a power rack attached to the frame, the power rack including:
         a first upright post configured to have a first barbell holder attached thereto; and   a second upright post configured to have a second barbell holder attached thereto.
 
B. The exercise machine of claim A, further comprising:
       

     a tensioner spring configured to reduce slack in the pull cable; 
     a first pulley configured to selectively receive the pull cable to enable the pull cable to be selectively attached to a barbell to enable the tensioner spring to assist a user in lifting the barbell, wherein the first tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force assisting the user in lifting the barbell. 
     C. The exercise machine of claim A or B, further comprising: 
     a second pulley configured to selectively receive the pull cable to enable the pull cable to be selectively attached to a barbell to enable the tensioner spring to hinder a user in lifting the barbell, wherein the first tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force hindering the user in lifting the barbell. 
     D. The exercise machine of claim C, wherein: 
     the exercise machine further comprises a resistance mechanism supported by the frame and linked to the pull cable; 
     the resistance mechanism is configured to be selectively set at one of multiple resistance levels; and 
     the second pulley enables the resistance mechanism to hinder the user in lifting the barbell in proportion to the set resistance level of the resistance mechanism. 
     E. The exercise machine of claim D, wherein the resistance mechanism includes: 
     a flywheel; and 
     one or more magnets arranged to selectively resist rotation of the flywheel. 
     F. The exercise machine of claim D, wherein the resistance mechanism includes a motor. 
     G. The exercise machine of claim A, further comprising: 
     a motor supported by the frame and linked to the pull cable; 
     a pulley configured to selectively receive the pull cable to enable the pull cable to be selectively attached to a barbell to enable the motor to assist a user in lifting the barbell. 
     H. The exercise machine of one of claims A-G, wherein the power rack further includes a pull-up bar supported by the first upright post and by the second upright post. 
     I. The exercise machine of one of claims A-H, wherein the power rack further includes: 
     a first weight plate holder supported by the first upright post; and 
     a second weight plate holder supported by the second upright post. 
     J. The exercise machine of one of claims A-I, wherein the first barbell holder and the second barbell holder are configured as spotter arms to prevent a barbell from falling on a user if the user is unable to continue lifting the barbell. 
     K. The exercise machine of one of claims A-J, further comprising one or more dumbbell racks supported by the frame and each configured to hold a dumbbell. 
     L. The exercise machine of one of claims A-K, further comprising a barbell retention mechanism including: 
     a tube attached to the frame and configured to receive one end of the barbell; and 
     a strap attached to the frame and configured to wrap around the other end of the barbell to keep the other end of the barbell positioned against the frame. 
     M. An exercise machine comprising: 
     a frame; 
     a pull cable supported by the frame; and 
     a bottom-out mechanism configured to prevent the pull cable from being fully extended. 
     N. The exercise machine of claim M, wherein the bottom-out mechanism comprises: 
     a visual indicator on the pull cable. 
     O. The exercise machine of claim M, wherein the bottom-out mechanism comprises a sensor configured to trigger when one or more of: 
     the first pull cable and/or the second pull cable has been extended to within a threshold of being fully extended; 
     a user has moved past a threshold distance from the exercise machine; or 
     a barbell has moved past a threshold distance from the exercise machine. 
     P. The exercise machine of claim O 15 , wherein the bottom-out mechanism further comprises: 
     an alarm configured, in response to the sensor triggering, to alert the user of a danger of the first pull cable and/or the second pull cable being fully extended. 
     Q. The exercise machine of claim O or P, wherein the bottom-out mechanism further comprises: 
     one or more brakes configured, in response to the sensor triggering, to engage the first pull cable and/or the second pull cable to prevent the first pull cable and/or the second pull cable from being fully extended. 
     R. The exercise machine of one of claims O-Q, wherein the sensor comprises one or more of: 
     an optical sensor; 
     a magnetic sensor; 
     a camera sensor; or 
     an infrared sensor. 
     S. The exercise machine of one of claims O-R, wherein: 
     the exercise machine further comprises a power rack attached to the frame, the power rack configured to have a first barbell holder and a second barbell holder attached thereto; 
     the exercise machine further comprises a tensioner spring configured to reduce slack in the pull cable; 
     the exercise machine further comprises a pulley configured to selectively receive the pull cable to enable the pull cable to be selectively attached to a barbell to enable the tensioner spring to assist a user in lifting the barbell; 
     the exercise machine further comprises a second pulley configured to selectively receive the pull cable to enable the pull cable to be selectively attached to the barbell to enable the second tensioner spring to hinder the user in lifting the barbell; and 
     the bottom-out mechanism is further configured to prevent the pull cable from being fully extended to avoid a user of the barbell, with the pull cable selectively attached thereto, from being prevented from moving a muscle group through a full range of motion while lifting the barbell.
 
T. An exercise machine comprising:
 
     a frame; 
     a resistance mechanism supported by the frame; 
     a first pull cable and a second pull cable supported by the frame and linked to the resistance mechanism; and 
     a power rack attached to the frame, the power rack including:
         a first upright post configured to have a first barbell holder adjustably attached thereto such that the first barbell holder may be adjusted in various positions between a first highest position and a first lowest position on the first upright post; and a second upright post configured to have a second barbell holder adjustably   attached thereto such that the second barbell holder may be adjusted in various positions between a second highest position and a second lowest position on the second upright post.
 
U. The exercise machine of claim T, further comprising:
       

     a first tensioner spring configured to reduce slack in the first pull cable; and 
     a second tensioner spring configured to reduce slack in the second pull cable. 
     V. The exercise machine of claim U, further comprising: 
     a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to assist a user in lifting the barbell, wherein the first tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force assisting the user in lifting the barbell; and 
     a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to assist the user in lifting the barbell, wherein the second tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force assisting the user in lifting the barbell. 
     W. The exercise machine of claim U, further comprising: 
     a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to hinder a user in lifting the barbell, wherein the first tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force hindering the user in lifting the barbell; and 
     a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to hinder the user in lifting the barbell, wherein the second tensioner spring is configured to provide between 3-5 pounds, between 2-8 pounds, between 1-11 pounds, or between 2-20 pounds of force hindering the user in lifting the barbell. 
     X. The exercise machine of claim W, wherein: 
     the resistance mechanism is configured to be selectively set at one of multiple resistance levels; and 
     the first pulley and the second pulley enable the resistance mechanism to hinder the user in lifting the barbell in proportion to the set resistance level of the resistance mechanism. 
     Y. The exercise machine of one of claims T-X, wherein the resistance mechanism includes: 
     a flywheel; and 
     one or more magnets arranged to selectively resist rotation of the flywheel. 
     Z. The exercise machine of one of claims T-X, wherein the resistance mechanism includes a motor. 
     AA. The exercise machine of one of claims T-Z, further comprising: 
     a motor supported by the frame and linked to the first pull cable and to the second pull cable; 
     a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the motor to assist a user in lifting the barbell; and 
     a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the motor to assist the user in lifting the barbell. 
     BB. The exercise machine of one of claims T-AA, wherein the power rack further includes a pull-up bar supported by the first upright post and by the second upright post. 
     CC. The exercise machine of one of claims T-BB, wherein the power rack further includes: 
     a first weight plate holder supported by the first upright post; and 
     a second weight plate holder supported by the second upright post. 
     DD. The exercise machine of one of claims T-CC, wherein the first barbell holder and the second barbell holder are configured as spotter arms to prevent a barbell from falling on a user if the user is unable to continue lifting the barbell. 
     EE. The exercise machine of one of claims T-DD, further comprising one or more dumbbell racks supported by the frame and each configured to hold a dumbbell. 
     FF. The exercise machine of one of claims T-EE, further comprising a barbell retention mechanism including: 
     a tube attached to the frame and configured to receive one end of the barbell; and 
     a strap attached to the frame and configured to wrap around the other end of the barbell to keep the other end of the barbell positioned against the frame. 
     GG. An exercise machine comprising: 
     a frame; 
     a resistance mechanism supported by the frame; 
     a first pull cable and a second pull cable supported by the frame and linked to the resistance mechanism; and 
     a bottom-out mechanism configured to prevent the first pull cable and the second pull cable from being fully extended. 
     HH. The exercise machine of claim GG, wherein the bottom-out mechanism comprises: 
     a first visual indicator on the first pull cable; and 
     a second visual indicator on the second pull cable. 
     II. The exercise machine of claim GG, wherein the bottom-out mechanism comprises a sensor configured to trigger when one or more of: 
     the first pull cable and/or the second pull cable has been extended to within a threshold of being fully extended; 
     a user has moved past a threshold distance from the exercise machine; or a barbell has moved past a threshold distance from the exercise machine. 
     JJ. The exercise machine of claim II, wherein the bottom-out mechanism further comprises: 
     an alarm configured, in response to the sensor triggering, to alert the user of a danger of the first pull cable and/or the second pull cable being fully extended. 
     KK. The exercise machine of claims II or JJ, wherein the bottom-out mechanism further comprises: 
     one or more brakes configured, in response to the sensor triggering, to engage the first pull cable and/or the second pull cable to prevent the first pull cable and/or the second pull cable from being fully extended. 
     LL. The exercise machine of claims II-KK, wherein the sensor comprises one or more of: 
     an optical sensor; 
     a magnetic sensor; 
     a camera sensor; or 
     an infrared sensor. 
     MM. The exercise machine of one or claims GG-LL, wherein: 
     the exercise machine further comprises a power rack attached to the frame, the power rack configured to have a first barbell holder and a second barbell holder adjustably attached thereto; 
     the exercise machine further comprises a first tensioner spring configured to reduce slack in the first pull cable; 
     the exercise machine further comprises a second tensioner spring configured to reduce slack in the second pull cable; 
     the exercise machine further comprises a first pulley configured to selectively receive the first pull cable to enable the first pull cable to be selectively attached to a barbell to enable the first tensioner spring to assist a user in lifting the barbell; 
     the exercise machine further comprises a second pulley configured to selectively receive the second pull cable to enable the second pull cable to be selectively attached to the barbell to enable the second tensioner spring to assist the user in lifting the barbell; and 
     the bottom-out mechanism is further configured to prevent the first pull cable and the second pull cable from being fully extended to avoid a user of the barbell, with the first pull cable and the second pull cable selectively attached thereto, from being prevented from moving a muscle group through a full range of motion while lifting the barbell.