Stand on one leg on top of box
Keeping knee behind toes, lower into squat until top of thigh is almost parallel to ground
Drive up into start position; repeat for specified reps
Perform set with other leg
Sets/Reps: 3x6 each leg
Gillett: I want him to be able to decelerate and explode on one leg, [so] that one leg has to be strong to support the body weight. When you’re moving at a high rate and you have to stop on a dime, the natural force of gravity and momentum put a lot of load on your leg.