Dating back to over 250 BC, the ancient Chinese were exploring Acupuncture, which is a stimulant to the nervous system. They observed how needling affects the local area of needle placement and distal areas from the needle placement, including soft tissues and internal organs. They created maps of influences. When needling certain areas, other certain areas of the body are influenced and certain internal organs are influenced. These ancient maps correlate with modern understanding of neurological anatomy and connective tissue anatomy.