Stand with bar on back and one foot elevated on box in front so that knee is in quarter-squat position
Pushing only with elevated leg, step up onto box and drive rear knee up
Slowly step down from box and repeat
Sets/Reps: 3x5-8 each leg
Advanced: Push off with front and back leg. Use a higher box so that front knee is at 90 degrees in starting position
Problem Solved: Lower-body strength imbalances
Peacock: Everyone has one leg weaker than the other. This single-leg exercise corrects that; it magnifies the weakness. You will know right away which leg is weaker, because you can’t compensate with the other leg. Once you correct the imbalance, perform the advanced dynamic version with a little more weight.