Ted Ehara wrote:
I don't know the mechanics of unbendable arm, since I'm not a physiologist. You might be better asking Craig about this. As for the human bridge, that was explained in Ki in Daily Life where K. Tohei is photographed doing it.
It just dawned on me that "Craig" must be Craig Hocker, even though he's not in your dojo (I thought you were referring perhaps to your sensei).
Craig? Since you're of a scientific bent, would you like to take a shot at explaining the physical mechanics of the "unbendable arem"? Thanks.