I’ve always believed that for a good all around fitness program you can do a lot worse than train like a boxer: Road work, calisthenics, weights, footwork and movement drills and some heavy bag. Sparring is fun when you’re young but once you get to middle age, you don’t need to get punched in the face.
It’s certainly more comprehensive than bodybuilding training.
And yes at 53 Tyson could still put anybody to sleep.