At 93, he’s as fit as a 40-year-old. His body offers lessons on aging.

It’s possible. At 47, I am fitter than all but the very fittest 20-year-olds. Consistency of working out with challenging exercise is key. Anyone who tells you anything different is a right clown. Don’t believe the Fat Acceptance dipshits. They will steer you into an early grave and a low QOL before that.