Reiki energy heals on al levels. When this healing is taking place, there are blockages removed, energy flowing that has not flowed smoothly for a period of time moves, and releases of emotional/mental blockages that have been held onto are shifted.
Reiki is a Japanese word translated as "Universal Life Energy" by Hawayo Takata. She brought the possibility of a relationship with this energy to us through Usui Shiki Ryoho, a healing system founded by Mikao Usui in the early part of the 1900's. Usui Shiki Ryoho can be translated as "the Usui System of Natural Healing." Until the mid-1990's, this was the most common translation and was used by nearly all of the various forms of hands on healing practice that came from Hawayo Takata's teaching.