The essence of Reiki can be described as:
REI — Spirit, Power, Essence
KI — Life Force, Breath, Chi
Spiritually guided life force energy.
What does this all mean?
This unseen life force energy flows around and through us all. Your energy communicates with you all the time. You may have been in a situation and your gut was telling you something's wrong or you meet someone new and straight away you feel a connection. Your energy gives you cues all day long, but a lot of the time we don't pay attention. Becoming aware of your energy is important, if your life force energy is low then you may become unwell, feel tired or less able to cope with stress, but if it is high, we become more capable of being happy and healthy.
This article beautifully describes our life force energy;
"A healthy human body is like a free-flowing river. When a river is flowing there are fish and wildlife. When it starts to stagnate and become blocked, fish decline because there is not enough oxygen and the plant life takes over because there is no balance. Things are out of balance when the flow is affected and that's the same in the body."
- Reiki Master K. Eckman