““I think you’re born with the ability to hit. Rocky Marciano didn’t start boxing until after the war when he was already twenty-six, but he was a natural hitter. You need leverage, but a lot of your power comes from your forearm down into your wrist. There’s a snap to your punch that comes from your wrist to your fist, and that’s what knocks the other guy out. You can actually hear that snap; it sounds like a pistol shot when it’s working to perfection. Joe Louis had that famous six-inch punch. He’d knock a guy out with a punch that only traveled six inches. His power came from the snap. It’s like snapping a towel at somebody’s butt. There’s no power in your arms. Then””
