Reiki means "universal life force energy" and it utilizes the fact that Ki(or Chi) can be affected, directed and channeled by human intent. Reiki practitioners receive training and attunement to this energy and facilitate the flow of it into and within participants, who are as much  a part of the process as the facilitator. No religious or philosophical belief systems are required or involved, and benefit  is realized regardless of the expectations or beliefs of the recipient.