That's some good shit. I once watched a cross fit class and was bugged to be trained by some 20 year old and how he could really help me. He was unaware of my background and education. End of his workout he was on the floor grasping his lower back unable to stand for minutes. Nice. I want to be like him.
I also watched my brother nearly kick this girl's head off without knowing it while he whipped his body doing a pull up. He called it kippping and suggested I try. Good grief.