Apparently Neil Armstrong was once being interviewed for a newspaper article and was asked about his daily workout or exercise regimen. Did he jog?
“I believe we only have a finite number of heartbeats, I’ll be damned if I’m going to waste mine running around the block”. Naturally, NASA and the press office got wind of this, and ole Neil “clarified” his remarks - he was naturally a huge proponent of exercise!
If you flew in war, as a test pilot, and as an astronaut you can do whatever you damn well please.
Good man, better times.
From what I understand, walking is the best exercise you can do.