This movement is particularly useful for working on your balance, so bracing the core and keeping your hips pointed to the floor as you drive your hips backward is essential for making sure that you don’t topple over. “If you’re looking to target your glutes, you’re going to want to think about keeping more bend in the primary leg. If you’re looking to target more hamstring, you’re going to want to keep that leg straighter,” explains Arrington. “The more the leg bends, the more you advantage the glute and disadvantage the hamstring.”