Joe Frazier

There are places on a man's head that are as hard as a rock. Your head's actually stronger than your body. And you don't have too many instruments up there workin'. But you got a lot of tools workin' in that body: the liver, the kidneys, the heart, the lungs. You soften that up and see what happens. I lived by the body shot.

It's not just the physical aspect of boxing, it's the whole fighter mentality that has been ingrained in me through the years as a competitive athlete. One of the hardest things you'll ever do is to box - to get into the ring and to face off with somebody whose whole goal is to knock you out, to hurt you, and to be able to fight back.