The 100 push up challenge

[southernsoftie]

im doing this 100 pushups thing they do an app for it. my mate whos amazing at climbing has a regime of doing 10 push ups 10 pullups followed by 10 situps constantly for 40 mins and hes the leanest person i have ever seen so hoping something like this may help me tone up a bit. he intends to join the 100 club which 100 pushups followed immediately 100 pullups.

That would be immense. Not getting the time to get back into the pull ups recently, but hopefully going to start tomorrow. I maxed out at 15 (and a half) last week. My aim's for 50.

Good regime that: 10 presses/10 pulls/10 crunches. Might give a go...but doubt I could maintain for 40mins! Any rest in there between each round, or is completely without rest?