Rob Liberti wrote:
These discussions about the unbendable arm trick, generally rapidly move into discussions about the iron bridge trick. In that example, there is not one big muscle supporting the extension/expansion of the entire body, but rather a bunch of muscles working together. Some have to relax, some have to tighten and hold, and they all have to work together.
Well, playing devil's advocate, I could say that you're description could also apply to what a well-conditioned athlete would do in his attempt at iron bridge.
I'll defer to Craig and wait for his explanation, although I think you made some very good points, Rob.