What Muscles Do Sit-Ups and Crunches Work?. Nike UK

Ab exercises like crunches and sit-ups target similar muscles. Learn more about abdominal anatomy and ways you can target different muscles.

What Muscles Do Sit-Ups and Crunches Work?. Nike UK

How to Do Crunches Properly. Nike UK

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Sit-ups: Techniques, benefits and variations on the classic

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Sit-Ups vs. Crunches

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