Dumbbell Alternating Chest Press on Swiss Ball

1. With your feet flat on the floor and your knees bent at a 90 degree angle lie with your back over a stability ball, keeping the ball between your shoulder blades.
2. With a dumbbell in each hand extend your elbows so that they are directly above you at shoulder level.
3. Beginning with your palms facing each other slowly lower one elbow to shoulder level, rotating the dumbbell so that your palm now faces the front.
4. Slowly return to the starting position.