Reflexology chart. Artwork of a chart indicating reflexology points on the feet. Areas of the feet that affect different parts of the body are coloured. Reflexology is a healing therapy originating from zone theory". Zone theory states that the body is divided into 10 meridians. These run up the body from the feet to the head and back down to the hands passing through organs along the way. Discomfort in a particular area of the foot is said to be related to a malfunctioning body structure or organ, and is treated by sustained, local compression-massage. For example, the red area at the heel of each foot is massaged to relieve pain in the sciatic nerve in the leg."