No idea how many push-ups or sit-ups I can do... Pull-ups I know I can do at least 10 if I warm up properly. In high school, I remember it was standard for everyone on the varsity line up (wrestling) to do at least twenty. One of my co-captains was a freak who could do 45 in one go.
Anyway, we never did situps anyway, and I still don't. V-Sits dude, V-sits.
Got to get those diamond pushups too.
Also, while I don't think it's good for your joints, even at this age I can still do a up to five 1 arm 1 leg push ups.
Push-ups that challenge the balance are good. I don't think I could do more than like... 3 now, but in highschool I held the record for pushups with hands AND feet on medicine balls-- my body not touching the ground at all (I had 43 without falling off as my record).
We also had a 30 foot long rope we would climb up every day. JV guys two times with hands and feet, Varsity 2 times but once had to be without feet. There was one crazy guy who was also on the gymnastics team who could go up AND down with no feet... but the craziest thing was watching our 275 lbs-der (a 280 lbs samoan guy who was a line backer for the football team too) climb up 30 ft of rope at all. lol
I didn't want to be the one to hold the rope for him lol