Alternating Swiss Ball Pec Press Exercise
1. Begin lying with your upper back on the stability ball, with your legs bent use your feet for support on the floor, and activating your core for balance.
2. While grasping a dumbbell in each hand, press one dumbbell above your chest, while the other rests on the chest in the down position.
3. Return the first dumbbell to the down position, and press the other above your chest.