If you're ever thinking of a career change, or want to take up boxing or kickboxing.

[ what he's doing is a hand wrap that's more commonly used in muay thai. he doubts that he actually learned it in a proper setting, based on what he knows about his past, but he probably picked up a bunch of bits of knowledge like this. ]

Plus, this way, you can punch Zero without hurting yourself and come whining to me about it.