Alternating Prone Abduction on Swiss Ball

1. Lay your stomach across your stability ball with your legs outstretched.
2. With a dumbbell in each hand drape your arms over the ball in front of you towards the floor.
3. Without arching your back or shrugging your shoulders, raise one arm out to the side up to shoulder height, keeping your thumb pointed towards the ceiling.
4. Slowly return your arm back to the starting position and complete the same movement with your other arm.