The Journal of Experimental Biology published an article that suggested fighting between males may have been a part of humans evolutionary history, which is why males punch with 162% more power than females.Past work has already proven that the proportions of a male’s hand is for manual dexterity as well as protecting the hand when formed into a fist. It’s already known that males have greater upper body strength than females.The research showed a great difference in punching power but not in overhead pulling strength between men and women of similar fitness levels showing that upper body strength is for punching not throwing weapons.