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How to Do Crunches on an Exercise Ball
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Step 1 of 4
Lay down on exercise ball. Start with head and neck off exercise ball. Feet flat. Keep head, back, and knees in straight line. Cross arms over chest.
Step 2 of 4
Using your abs, lift your upper body forward to the point where your elbows come as close as possible to your waist.
Step 3 of 4
Return to original position.
Step 4 of 4
You're Done
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