Reflexology is a complementary session or treatment session involving the physical act of applying pressure to the feet and hand with specific thumb, finger and hand techniques without the use of oil or lotion. It is based on what it is claimed to be a system of zones and reflex areas that they say reflect an image of the body on the feet and hands, with the premise that such work effects a physical change to the body. The Reflexology Association of Canada defines reflexology the natural healing art based on the principle that there are reflexes in the feet, hands and ears and their referral areas within zone related areas, which correspond to every part, gland and organ of the body. Through application of pressure on these reflexes without the use of tools, crèmes or lotions, the feet being the primary area of application, reflexology relieves tension, improves circulation and helps promote the natural function of the related areas of the body.