What Muscles Do Sit-Ups and Crunches Work?.
By A Mystery Man Writer
Description
Ab exercises like crunches and sit-ups target similar muscles. Learn more about abdominal anatomy and ways you can target different muscles.
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How to Do Oblique Sit Up – Google Play'деги колдонмолор
Sit-ups Are BAD For You - Chiropractic on Eagle, Dr. Jon Saunders
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