or the fact that if you hit something very very old with something, like say a sword, warhammer, battle axe, or two handed sword, it will tend to break apart. You will probebly need to fix something that is repeatidly hit for 15 hours of solid hits every once in a while... i don't think i can support the living tissue theory. I second the disagreement. Besides that would be kinda disgusting to think about really.