Reiki is a Japanese healing practice that involves channeling "universal life energy" to promote physical, emotional, and spiritual well-being. Practitioners use their hands to transfer energy to the recipient, either through light touch or by hovering over the body, with the aim of clearing blockages and restoring balance. Developed by Mikao Usui in the early 20th century, Reiki is considered a holistic therapy that supports relaxation, reduces stress, and enhances the body's natural healing abilities. It is often used as a complementary therapy alongside other treatments.