Reflexology involves the use of different massage and pressure techniques to relax and loosen muscles in the feet and hands. Reflexology is based on the concept that energy zones connect certain areas of the body to the feet and hands. In this way the feet and hands are viewed as maps or mirrors of the body. Putting pressure on and massaging specific points on the feet or hands is believed to affect the corresponding area of the body.
Each foot contains more than 7,000 nerve endings. Technically, foot massage with a clear intention to manipulate these nerve endings is a form of reflexology. To an extent, reflexology can be performed on oneself.
Source: Holistic and Complementary Therapies