Stability Ball Dumbbell Chest Flye
Works: Chest, Core, AbsHolding dumbbells, like back on a stability ball, upper glutes to shoulder blades touching the ball. Lift the dumbbells above your chest, palms facing each other. Keeping your torso and head in line, slowly lower dumbbells out to your sides and down to shoulder level. Return to start, with arms above chest. Do three descending sets of 16, 12, and 10 reps, increasing the weight each set.