Women's Health

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Sit upright on a stability ball with legs hip-width apart and feet flat on the floor. Slowly lower your torso about 6 inches forward, keeping your back straight. Tighten your glutes as you lower and return to start. Then, keeping your abs tight, slowly lift your right leg off the floor. Hold for 3 to 4 seconds and release. That's one rep. Repeat the whole sequence, lifting your left leg next. Alternate until you complete your set.