Using a step or box is an easy way to increase the range of motion of an exercise. Increasing the range of motion of an exercise will increase the hypertrophic response..One of my pet peeves with seeing people use deficient exercises like the deficient lunge pictured in the first video is that THEY DONT EVEN USE THE EXTRA ROM..On my reverse lunge, I am going completely down to the floor and taking advantage of the deficit set up. More hip and knee flexion for more quad/glute/hamstring action..If using a step or box, GO DOWN THE ENTIRE WAY and take advantage of that deficit! Exercise Library