Reiki is a very gentle hands on therapy, originating in Japan. It is based on the belief that we are surrounded by energy which can stimulate relaxation and healing which may be emotional, physical or spiritual. It's carried out fully clothed.
All that's needed is a quiet space but you can choose to have music on in the background if you wish. As I travel to visit clients I bring a comfortable reclining chair. Hands are held in several positions on your body or just off it; sometimes people may feel warmth from them, sometimes they may feel cool. You don't have to do anything so your body can relax and you may even fall asleep during the session.