Reflexology is based on the ancient Chinese belief that energy flows around the body. When the energy can flow freely we are well, balanced and in harmony with our environment physically, mentally and emotionally. If the energy becomes blocked, illness may result, and unblocking this energy restores the energy flow enabling healing to take place. Wherever there is imbalance or illness in the body, the corresponding area in the foot may be tender. Crystal deposits, which can be felt by the reflexologist, may be found in the feet and hands. Working over these areas helps to break down and get rid of toxic waste products and restore energy flow.