Absolutely.

My husband is a small wiry type who has been incredibly disciplined about working out for most of his life, and he's still working out and active, but as he's gotten on in years he has begun fretting about his "spare tire" which he feels is due to lack of muscle tone, because he stopped doing sit-ups after developing Irritable Bowel Syndrome. He's afraid if he does them he'll start cramping again, and I don't blame him.

But he's not happy about that "spare tire" at all.