Sub-health is a critical state, in which the spirit of dynamism and adaptability decline, although there's no clear disease. If such a state can not be timely corrected, which easily leads to psychosomatic diseases including: psychological disorder, gastrointestinal diseases, hypertension, coronary heart disease, cancer, decreased sexual dysfunction, fatigue, attention unfocused, mood irritability, insomnia, and poor digestion, loss of appetite, abdominal distension, palpitation, chest tightness, constipation, and diarrhea, exhaustion and even feeling of death. However, there's no problem found on organs after medical examination, so it is the problem of function. Besides fatigue and discomfort, people in the state of sub-health is not in danger of losing life. But if encountered a high degree of stimulation, such as stay up late and loss temper under stress, they are prone to be at risk of sudden death, namely overwork death. ]]>