Tip - What Muscles Are Being Used in Stability Ball Crunches?

Published  | Submitted by Reinhard Otto
What Muscles Are Being Used in Stability Ball Crunches?

In stability ball crunches, you position your back over a stability ball, with your knees bent and feet on the floor. Then, you peel your upper back off the ball, decreasing the distance between your ...

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Posted: 9 years, 5 month(s) ago

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