Uuuh, thats pretty damn much. I've never tried doing that for as long as I can w/o weights. When I do situps I always take 30kg and then drop to 25kg when It gets too hard I do 3x36 (I do other belly stuff aswell but that's besides the point).
I never do Pushups though, pointless. There are machines and weights in the gym, it's more hard core
.
I had a really great time in the gym today, I was there with a friend and we completely pressed each other to death.
When we left I was unable to drive my motorcycle. I had to rest for like 30-40 mins (we went and got a sausage while waiting). That was great man. I love it when it goes so well.