Re Punching power. At school, a member of my circle got into a quarrel which eventually brewed-up into a fight somewhere in the school grounds. The violence didn't last very long, however. My colleague threw very hard vicious punch at his opponent's face - which made solid contact. Unfortunately for him, he hit a part of his opponent's face that was stronger than his own hand! Oww!

He had to break off the fight in great pain.