Working one leg at a time helps fire up the glutes, and holding one knee into the chest makes it easier to feel the butt working.
- Lie on your back and bring your left knee into your chest with your hands clasped just below your knee. Lift your right toes up, and press your right heel into the floor to lift your pelvis and torso off the floor.
- Lower your back and pelvis to the ground to complete one rep.
- Aim to do 12 to 15 reps on each side.