If you increase time-under-tension, you can effectively increase the length of your sets, triggering more muscle growth. Adding a one-fourth rep to each full rep will increase the length of each set and reinforce proper positioning with your squat pattern.

Assuming your goal is size, do these at the end of your leg workout for sets that last around 40 seconds.

Related:  30 Days to a Big Butt & Great Squat

Related:  The Breathing Squat Challenge