abdominal
abdominal muscle
ab

"There is no such thing as a straight man with visible abdominal muscles."

He tightened his abdominal muscles against the power of the feeling within him.

Form: Engage the abdominal muscles to protect the lower back.

It is caused by weakness of the lower abdominal muscles.

Some of the best developed abdominal muscles I've ever seen.

She held and pushed with the strong lower abdominal muscles.

But after you've had the baby, all of those abdominal muscles are stretched out and tired.

Every morning, He has been running and training his abdominal muscles.

And many activities do little, if anything, to strengthen the back's most critical source of support: the abdominal muscles.