Last night I had the TV on a sports channel while I paid attention to other things. When I focused my attention to what was on the tube it was a "cross fit" competition. A bunch of guys were running a mile, doing 100 pull ups, 200 sit ups, 300 squats, and at the last running another mile - all with a 20 lb. vest strapped to their chest.
At my age and in my condition, they would need to change the rules to - run 20 yards, do 10 pull ups, 20 sit ups, and 30 squats - all with the 20 lb. weight used as a counter balance on a rope pulling me up as I tried to do the pull ups, push ups and squats. I'm adjusting to the fact that I'm no longer bulletproof.