Reiki means universal life energy and is an ancient healing method that manipulates energy flow in the body. Reiki practitioners believe there is an energy force in and around the body.They believe that there is a flow of energy between the reiki practitioner and the receiver of the treatment.It is thought that reiki releases energy flows and allows the body's own natural healing ability to work.Reiki focuses on seven main energy centers, called chakras, in your body.hey believe that there is a flow of energy between the reiki practitioner and the receiver of the treatment. It is thought that reiki releases energy flows and allows the body's own natural healing ability to work.