Has there ever been anything more mysterious and unexplainable in sports than punching power? You hear so much bro science and misinformation behind it because it's such a strange thing. You'd think it was pure strength, but there are so many strong guys in MMA and boxing who were pillow handed. I remember Julian Jackson (for my money the hardest p4p puncher of all time) citing Francisco de Jesus as the physically strongest man he ever fought and he had a 29% KO percentage. Body type gives no hints. There are guys chisled out of stone who can knock you out with either hand and then you have a musclebound guy like Tim Bradley who couldn't bust a grape. You have tall lanky guys who can't punch through a piece of paper, then you have tall lanky guys like Hearns and Arguello who can knock your head into the 5th row. It's not simply speed, because you have a ton of fast guys with mediocre power (Floyd, Whitaker, Camacho, Maligaggi, ect). It's not simply proper technique, because who had better technique than Floyd or Sweetpea? Then you think size, but 7'0" 300lb Valuev had mediocre power. We can't figure out why people have it and, according to every great boxing trainer, it's a "god given" thing that can't be learned. What a strange phenomenon!