The spinal column stores nerve force and delivers it to all the nerve-endings which terminate in it. These nerves carry this force throughout the body. Since this includes the brain, we may see how important it is to take proper care of the spine. There are three ways to do so: posture, exercise, and stimulation. The first requires us to carry the spinal column erect. The second is to turn, bend, and twist it daily so as to keep it supple. The third is to stimulate it by cold showers or wet packs. Take wet towels alternately hot and cold, fold them over until they are about four inches wide, and lay them on the back along the whole length of the spine. The water in which the towels are dipped should be alternately as hot and as cold as one can bear without discomfort.
-- Notebooks Category 5: The Body > Chapter 5 : Exercise > # 30
