farking hell.... How can you follow a sport, any sport and have no idea about muscle fibres? Boxing in general and its fans are so backwards when it comes to these sort of things, can see why it's viewed as a dumb sport.
I think a lot of that is due to his training. For once he has this wired up bag/wall which he would just punch as many times in aminute as he could. I have seen no other boxers train like that.
Yep black people have fast twitch muscle fibres and have never been defeated in a boxing ring.....all the world champion boxers are black and no white boxer has ever scored a KO.