Reiki energy is universal life force energy which has a God-Consciousness and connects us with our Divine Creator, God, Source, or the name that is right and prefect for you . Reiki is not a religion but a spiritually based healing system or modality.
After practicing and studying healing for the past decade, It has become my belief we all channel a form of healing energy. It is why we gently touch people who are in physical or emotional pain.
Reiki energy is connected directly with higher consciousness and has an intellegence which "knows" the "root" cause of your "dis-ease". (Some causes of "dis-ease" can occur when you have experienced such events or emotions as trauma, betrayal, fear, or the holding of limiting beliefs which can stem as far back as early childhood.)
Reiki flows directly to the "root" cause of a dis-ease or illness and transforms the negative or blocked energy to a positive or flowing energy. The healing process can occur during one session however, more than one session is usually needed to fully heal.
To clarify what I mean, think about it this way.
We know that if we want to remove a weed permanently we must remove the "root" of the plant to prevent it's regrowth. If we only address what can be seen on the surface, it will continue to regrow and need to be dealt with again and again.