Ben Goldstein/Studio D
BENCH DIPS WITH FEET ON BODY BALL
Rest your heels on a Swiss ball (or a chair) and your palms on the edge of a sturdy chair seat behind you. Keeping your elbows tucked against your sides, bend your arms and lower your body until your upper arms are parallel to the floor. Your hips should drop straight toward the ground. Hold for a beat, then straighten your arms and repeat. For a real challenge, place one foot on the ball and hold the other straight out in the air.