Reiki is a Japanese healing art to increase and free the unbalanced energy flow of the body. It is beneficial for stress reduction and relaxation and also promotes healing. The word Reiki comes from the words "rei" (universal) and "ki" (life energy). It is a type of energy healing that targets the energy fields around the body. Improving the flow of energy has significant health benefits for the body as it promotes a sense of calm and ease and can help reduce pain.