I don't think that this belongs in the beyond dreaming forum, because I believe that body movement is not the results of some strange ki/chi/psi/whatever, but can be explained scientifically.

The movement of muscles is actually the contraction of muscle fibers, and I realize that, but my question is, what kind of energy supplies the movement? Or, is my question somehow not quite valid?

I'm being serious. I'm really curious about it.