Many things influence the quality, quantity and balance of Qi. Physical and emotional trauma, stress, lack of exercise, overexertion, seasonal changes, diet, accidents or excessive activity can lead to a blockage of Qi.
Normally, when this imbalance occurs, the body naturally bounces back, returning to a balanced state of health and well-being. When the disruption of Qi is prolonged or excessive, or if the body is in a weakened state, then illness, pain or disease can set in.