Tip - What Muscles Are Getting Worked During a Swiss Ball Sit Up?

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What Muscles Are Getting Worked During a Swiss Ball Sit Up?

Sit-ups and crunches are effective exercises for strengthening your ab muscles. Swiss ball or stability ball sit-ups are harder to do compared to traditional sit-ups on the floor, though they both ...

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Posted: 9 years, 5 month(s) ago

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