Reiki is a Japanese form of alternative medicine called energy healing. Reiki practitioners use a technique called palm healing or hands-on healing through which a "universal energy" is said to be transferred through the palms of the practitioner to the patient in order to encourage emotional or physical healing. Energy healing targets the energy fields around the body. According to practitioners, energy can stagnate in the body where there has been physical injury or possibly emotional pain. In time, these energy blocks can cause illness. Energy medicine aims to help the flow of energy and remove blocks in a similar way to acupuncture or acupressure. Improving the flow of energy around the body, say practitioners, can enable relaxation, reduce pain, speed healing, and reduce other symptoms of illness. Reiki has been around for thousands of years. Its current form was first developed in 1922 by a Japanese Buddhist called Mikao Usui, who reportedly taught 2,000 people the Reiki method during his lifetime. The practice spread to the U.S. through Hawaii in the 1940s, and then to Europe in the 1980s. It is commonly referred to as palm healing or hands-on healing. Reiki is best held in a peaceful setting, but it can be carried out anywhere. The patient will sit in a comfortable chair or lie on a table, fully clothed. There may or may not be music, depending on the patient’s preference. The practitioner places their hands lightly on or over specific areas of the head, limbs, and torso using different hand shapes, for between 2 and 5 minutes. The hands can be placed over 20 different areas of the body. If there is a particular injury, such as a burn, the hands may be held just above the wound. While the practitioner holds their hands lightly on or over the body, the transfer of energy takes place. During this time, the practitioner’s hands may be warm and tingling. Each hand position is held until the practitioner senses that the energy has stopped flowing. When the practitioner feels that the heat, or energy, in their hands has abated, they will remove their hands and may place them over a different area of the body.