Back Leg Raise: On your hands and knees, lift one leg up parallel to the floor with your knee bent and your foot flexed. Lift the foot towards the sky, squeezing the glutes tightly with every lift. Repeat 15-20 times on each side — you should really feel the burn if you're doing it right!
Squat Glute-Lift: Start in a squat with your hands on your hips. Starting with the right leg lifting, straighten your left leg and lift the right leg directly behind you, going up into a leg raise. Make sure your core is tight and you squeeze your glutes while your leg lifts. Repeat 15-20 times on each side.