Reiki was developed in Japan in 1922 by Mikao Usui and was brought to the West in 1937 by Hawayo Takata.
The popularity of Reiki has grown exponentially in the past few decades.
A survey conducted in 2007 indicates that in the previous year, 1.2 million adults and 161,000 children in the U.S. received one or more Reiki sessions.
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