Energy is the source of all movement in the body. In a healthy person, living in harmony with him- or herself, others and the environment, it circulates freely. A disturbance of this cyclical flow of energy results in disharmony leading to sickness and disease. Any part or organ in our body with deficient energy supply cannot function properly. Lack of energy in the Bladder Meridian for example results in a weak back and consequently backache.
When Chi flows freely through the meridians, the body is balanced and healthy, but if the energy becomes blocked, stagnated or weakened, it can result in physical, mental or emotional ill health. An imbalance in a person's body can result from inappropriate emotional responses such as: excess anger, over-excitement, self-pity, deep grief and fear. Environmental factors such as cold, damp/humidity, wind, dryness, and heat can also cause imbalance so as factors such as wrong diet, overwork ,too much exercise and stress.