Targets: Abs, butt, outer thighs, hamstrings, and quads
- Tie ends of band together to form a loop and place it around ankles with feet shoulder-width apart (it should be snug, not loose).
- Lie facedown on ball with your hips on its center, back flat, legs
extended and hands on floor, directly under shoulders.
- Keeping upper body still, press legs out to sides. Then bend knees, bringing feet in toward butt; push back out. Return to start. Do 15 reps.
Originally published in FITNESS magazine, July/August 2009.