Racking and unracking exercise machine

1. An exercise device comprising:

a resistance unit comprising a motor;

a cable coupled to the motor, wherein the motor selectively tensions the cable in accordance with an exercise program, and wherein a user resists a pull of the motor; and

an audio input device, wherein in response to receiving a set of sounds comprising a vocalized command from the user to unrack a digital weight, the motor is signaled to apply tension on the cable to increase a load on the cable that the user resists, wherein tension is applied on the cable according to a profile, wherein, according to the profile, tension is applied at a first ramp rate for a first interval of time and at a second ramp rate for a second interval of time, wherein the first ramp rate and the second ramp rate are different, and wherein the profile is determined based at least in part on a type of movement to be performed.

2. The exercise device of claim 1 , wherein a nominal tension is applied when the digital weight is unracked.

3. The exercise device of claim 1 , wherein in response to receiving the set of sounds comprising the vocalized command from the user to unrack the digital weight, tension is changed first gradually, then more quickly, and then less quickly to reach a desired tension.

4. The exercise device of claim 1 , wherein an amount of jerk when the digital weight is unracked is limited.

5. The exercise device of claim 1 , wherein a remote coaching unit also sends rack and unrack commands in addition to user generated commands.

6. The exercise device of claim 1 , further comprising an audio output device configured to generate an audible signal indicating that the digital weight has been unracked.

7. The exercise device of claim 1 , further comprising an audio output device configured to generate an audible signal indicating that the digital weight has been racked.

8. The exercise device of claim 1 , further comprising a haptic cue that the digital weight has been racked.

9. The exercise device of claim 1 , further comprising a haptic cue that the digital weight has been unracked.

10. The exercise device of claim 1 further comprising an actuator connected to the cable, wherein the actuator is physically arranged to deliver a force to the user.

11. The exercise device of claim 10 wherein the actuator comprises a smart accessory wirelessly connected to the resistance unit, and wherein the actuator includes a control that signals the motor to apply or remove tension to the cable in response to the user using the control to indicate to rack or unrack the digital weight.

12. The exercise device of claim 11 wherein the control comprises a button.

13. The exercise device of claim 10 , wherein when a nonstandard orientation of the actuator is detected, the digital weight is racked in response.

14. The exercise device of claim 10 , wherein the actuator comprises a heart rate sensor to detect heart rate.

15. The exercise device of claim 10 , wherein the actuator comprises a grip sensor to detect grip.

16. A method, comprising:

receiving a set of sounds comprising a vocalized command from a user to unrack a digital weight; and

in response to receiving the set of sounds comprising the vocalized command from the user to unrack the digital weight, signaling a motor to apply tension on a cable coupled to the motor to increase a load on the cable that the user resists, wherein tension is applied on the cable according to a profile, wherein, according to the profile, tension is applied at a first ramp rate for a first interval of time and at a second ramp rate for a second interval of time, wherein the first ramp rate and the second ramp rate are different, and wherein the profile is determined based at least in part on a type of movement to be performed;

wherein the motor selectively tensions the cable in accordance with an exercise program, and wherein the user resists a pull of the motor.