So let me ask you guys something. If iron palm/body/leg/whatever is realy all it's cracked up to be why aren't there any legitimate professional full contact fighters who have it as a part of their training routine?

I've seen Thai fighters kick though maple baseball bats, and those are hard. That's without anything beyond heavy bag, pads, and sparring.

Also another question. How much, if any, do you think iron palm increases the resistance of bones to fracture and breakage in pounds per square inch?