I am not a morning person, and I never have been—well, unless I have to make money. For years, my start time at my old job was 5 a.m. and, against all odds, I made it in every day. Now, I teach a 6 ...

If you saw how fit I am today, at 77, you might think I’m one of those sportive types who love to sweat and push themselves physically. But you’d be wrong—totally wrong. I so dislike exercise (let ...