This sculpting move is an excellent back strengthener, since you're holding your body weight in addition to dumbbells, says Michele S. Olson, PhD, a professor of exercise science at Auburn University in Montgomery, Alabama.
- Lean abs and hips on a stability ball, chest lifted, holding 3-pound weights in each hand, soles of feet against a wall for support.
- Extend arms by ears and pump them up and down a few inches, keeping neck in line with spine.
- Work up to three sets of 10 to 20 reps.
Originally published in Fitness magazine, December 2005.