Reiki is a method of healing that was rediscovered by Dr Mikao Usui in Japan in the 1800s.
Central to this system of healing is the concept that an energy life flow exists within living beings which supports life by helping patients to maintain homeostasis.
This energy is known as Ki/Chi. When Ki is diminished ill health can arise. The other important concept is that a Reiki practitioner can channel Ki from its originating source and passed on to a recipient.