Reiki is an energy healing technique that promotes relaxation, reduces stress, and anxiety through gentle touch. Practitioners use their hands to deliver energy to the recipient's body, improving the flow and balance of their energy to support healing. The term "Reiki" was derived from the Japanese words "rei," meaning "universal," and "ki," which refers to the vital life force energy that flows through all living things. Developed by Mikao Usui in the early 1900s, Reiki is now used worldwide, including in hospitals and hospices, to complement other forms of health treatments.