A member asked:

Why is it that i can do sit-ups with a pillow supporting the small of my back, but can't do the same exercise on a mat?

A doctor has provided 1 answer
Dr. Clive Segil answered

Specializes in Orthopedic Surgery

See below: Abdomenal muscles not strong enough also core muscles to be strengthened.

Answered 3/26/2013

5.7k views

Thank

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