I did six years of planning to win the championship from Jack Dempsey.

Normally, I could hit hard enough, as anyone who studied my fights might have known. But the impression was that I was essentially defensive, the very reverse of a killer, the prize fighter who read books, even Shakespeare.

In youth, we get plenty of exercise through games and running around, but as middle life approaches, we settle down, literally and figuratively.

The greatest fighter I ever saw

Handball, swimming, running, jumping, basketball, and boxing were as much a part of me as breathing.

A concave chest means that your diaphragm is sagging.

But I do say that, if you will regularly devote 15 minutes a day, preferably before breakfast, for 60 days to the simple set of exercises that I devised for conditioning men in the navy, I guarantee that you will enjoy increased physical buoyancy and mental vigor.