2011 SHUDOKAN OPENING HIGAONNA SENSEI STONE CONDITIONING.wmv

[shimmeringreflection]

It's amazing how quickly a beginner's bones strengthen in response to this kind of conditioning. The bones calcify (grow), and the bone density increases but it can take months before you can proceed to hit boards or stones hard. Some karateka fail to understand all this, and try board breaking without a few months of conditioning beforehand, and wonder why their hands break instead.

[Oblico1Morale]

Well, there is a simple explanation. The trick is the adamantium skeleton under that man's flesh.