Reiki is the life energy that flows through all living things. Reiki Practitioners understand that everyone has the ability to connect with their own healing energy and use it to strengthen energy in themselves and help others. It is believed that a person's "ki" or energy should be robust and free-flowing. When this is true, a person's body and mind are in a positive health state. When the energy becomes weak or blocked, it could lead to physical or emotional imbalance symptoms.