Chest Presses
For chest, abs, lower back, butt, hamstrings
Sit on exercise ball with a dumbbell in each hand. Walk feet forward and roll ball back until just your shoulders are supported and knees are bent. Keeping hips lifted, open arms out to the sides, then bend elbows to lift weights up, palms facing in. Straighten arms and press weights up, bringing ends together; lower weights. Do 10 reps.