" It's not one punch that will kill you, its the accumulation of punch after punch after punch."
Fighting isnt about power or accumulation of punches its about getting hit in the right spot and a clean blow to the top of the nose would push a bone in your brain and kill a man and there are lots of deadly strikes that every experienced fighter knows of, my dad used to box and taught me some but was strict about me never using them while playing or even in real fights at school or teaching them to friends, any real boxer would tell you the exact thing.