Single Leg Stability Ball Leg Curl
- Lie flat on your back and set your heels on the very top of a stability ball.
- Pull your non-working leg's knee over your hip. Do not allow this knee to move.
- Flex your glutes and raise your hips 5 inches off the floor. Do not allow your hips to move during the movement.
- Explosively pull your heels toward your hips as far as you can, then smoothly allow your heels to roll away.