Best way to think of it as current/electricity in the body and all we are doing is building that charge/current up over time.

Forget all the mystical stuff...

Find out how your heart pumps, does not just happen?

Im not going to go in depth about it but essentially we are bio-electric our heart is an electro chemical device - you can read about it here:

http://en.wikipedia.org/wiki/Electri...m_of_the_heart

People seem to forget that martial arts systems were not just about fighting but health as well. In days gone by alot of systems always had a bodywork component.