[matt5250]

thats true zen, but hard blows to your skeletal structure that make micro fractures almost always heal back with more/stronger bone than before. people who train in muay thai actually use jagged pieces of rock or concrete to put tons of micro fractures in they're shins and forearms in order to strngthen them since knees, shins, elbows and frearms are used so much. so in a typical fight, you actually do heal to be stronger than you were before. although this doesnt quite hold true if your being attacked with a gun.