The Chinese have worked with this system for more than 3,000 years.
Physicists call it electro-magnetic energy.
About the same time in the U.S., a surgeon who was performing open-brain surgery noticed an interesting fluid ebbing and flowing. Went from the encasement around the brain down the spine and outward to all parts of the body. CSF for short. Such restriction leads to such problems as depression, headaches, lethargy, and eventually many diseases. Now, back to the important role played by pain.