Lie on your front with your upper thighs and pelvis over a stability ball.
If needed use a partner to hold your feet on the floor.
Take your elbows out to your side with your hands in front of your head.
Lift your elbows and hands up, powering the movement from the muscles between your shoulder blades.
Try to keep your hands and elbows at the same level as you lift.
Control the movement back down to the start position.
