Lie on your side and place a band above your knees, approximately an inch or two above the knee joint.
Bend your legs a little, keeping the feet in line with your back.
Use your core stability muscles to keep the body stable.
Keeping your feet together, lift the top knee up against the resistance of the band.
Ensure you stay on your side and do not roll your hips and your body back with the movement.
Lower the knee back down, controlling the resistance.
