I couldn't do it. (maybe a couple when I was 25), but some or the crossfit sessions ended with 10 burpee muscle ups. The gymnast types excelled in that sort of stuff, but the big boys (and girls) ruled when it came to rowing, dead lifts etc. It was neat that there were exercises that each body and muscle type was good at. Two of the women were preschool teachers, no small women, and they were cleaning 150 lbs. Yet there were other young ladies that could do 100 kipping pull-ups.