Metabolism allows humans to rid their bodies of waste and toxins. The lymphoid system, intestines, and skins are all essential to detoxifying the organs of the body. Observing or feeling failures or weaknesses in these organs is difficult, if not impossible without special equipment. But due to the special structure of human body, every organ has nerves that stretch and connect to the feet, with the nerve ends gathered to form the reflective zones. Proven by clinical experiments, the two feet are actually miniatures of the three-dimensional distribution of the organs and tissues. When the organs and glands are not working in order, crystal deposits will appear in the corresponding reflective zones and form pain points. The sensation may differ at various points. Some points will feel like sand, some like granite, while others will feel swollen. Proper stimulation in the corresponding reflective zones will help to hasten discharging waste and toxins that surround particular tissues and result in a curative effect.
This is what the modern medicine called Tertiary Medicine: physiotherapies that stimulate the regenerating ability of cells and therefore allow the organs and tissue to recover and function properly.