Ball Crunch: Sit on a stability ball, feet flat and hands clasped behind head, elbows out. Lower upper body until back is resting on ball. Slowly crunch up as you lift right leg as high as you can while maintaining balance (as shown). Lower to start; repe
Ball Crunch: Sit on a stability ball, feet flat and hands clasped behind head, elbows out. Lower upper body until back is resting on ball. Slowly crunch up as you lift right leg as high as you can while maintaining balance (as shown). Lower to start; repe
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