"Okay..." Running was good, maybe it had built up leg muscles and he should start with kicking practice?

...no. Not the way this was going.

"Alright, the first thing you have to remember is in a fight is that you don't pull your punches. Assume the other guy's really got it out for you--that's how you survive. And you want to put your weight into it; if you keep throwing a punch like that you're going to strain your muscles."

He thought for a moment. Maybe he needed a different approach. "Anyone ever made you so angry you wanted to let them have it?"