The ranging center nerve (spinal cord) goes from the brain and the medulla oblongata to the spine. The nerve in addition passes Hone, comes off, and reaches internal organs the spine bones and tail. The human came to be able to use its hand freely by evolving from two four-footeds vertebrate original to standing upright by the foot. However, a physical, differ from foot animal by four depending on gravity, mental stress will be accumulated as for this vertical posture. The spine bends, the vertebra shifts, and the nerve might come to be pressed. It progresses without the subjective symptom such as "Pain" there in about 90 percent of such a pressed nerve, and the trouble is caused to a lot of internal organs etc.