Wow! I used to do sets of 50 pushups 40 years ago... 5 slow ones now. Since I was always climbing trees or sailboat masts, I can still do several sets of 10 pullups though, and back and forth on the monkey bars multiple times. In da joint in my 30's I was doing 18 sets of 10 pullups every other day. One o' me nicknames was Popeye, because of my forearms. Now at 72 and with the infirmities of aging I'm just trying to survive. My refugee kids run me ragged.