Dumbbell 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 keep you elbows bent and  your hands directly by your side at chest level.
3. Beginning with your palms facing forward slowly extend your elbows raising and rotating the dumbbells so that your palms now face each other.
4. Slowly return to the starting position.