Most commonly ,the word reiki refers to simple hands on healing technique,a form of energy medicine which was rediscovered by Dr. Mikao Usui in Japan in late 19th century.
Reiki has its real roots in India,having passed through Tibet and China to Japan where it was rediscovered.
While Reiki is spiritual in nature, it is not a religion. It has no dogma, and there is nothing you must believe in order to learn and use Reiki. In fact, Reiki is not dependent on belief at all and will work whether you believe in it or not. Because Reiki comes from God, many people find that using Reiki puts them more in touch with the experience of their religion rather than having only an intellectual concept of it.
Reiki is one of several nonsensical methods commonly referred to as “energy healing.” These methods are based on the idea that the body is surrounded or permeated by an energy field that is not measurable by ordinary scientific instrumentation. The alleged force, said to support life, is known as ki in Japan, as chi or qi in China, and as prana in India. Reiki practitioners claim to facilitate healing by strengthening or “balancing” it