The Bulgarian split squat is a core training staple that can help to build strength and size in your legs, but are you sure you're even doing the exercise correctly?

For this unilateral hamstring and glute-building move, you shouldn't settle for anything other than perfect form—especially because it's such a simple, essential movement that should serve as one of the centerpieces of your training plan. Let Men's Health fitness director Ebenezer Samuel, C.S.C.S. and associate fitness editor Brett Williams guide you through the move's subtleties, saving you from the bad habits that are keeping you from unlocking your fitness potential.

Before you throw your foot up on the bench and start lunging, take note that it's extremely important to pay attention the movement here. The starting position is extremely important so that you're able to keep your balance throughout—and you don't want to leave possible glute, hamstring, and quad gains on the bench.