Reiki (pronounced ray-key) comes from the Japanese words "Rei" meaning spirit or sacred, and "Ki" meaning energy.
Reiki is a stress reduction and relaxation technique from Japan. The word itself means "universal life energy". Reiki is based on the premise that all living things have this universal life energy, and when this energy becomes blocked, disease and/or discomfort can occur. Reiki is a holistic therapy that treats the mind, body and soul.