The World Health Organization refers to the state in which the organism has no organic lesions but has some functional changes as the “third state”, which in our country is called the “subhealthy state”. Thus, subhealth refers to the following conditions: (1) Functional changes rather than organic lesions. (2) Changes in physical signs, but pathological changes cannot be detected by existing medical technology. (3) Poor quality of life and chronic low health. (4) Unhealthy signs outside the site of the lesion that accompanies chronic disease. There is uncertainty as to whether subhealth develops into a serious organic lesion. However, subhealth itself is a problem that needs to be addressed. Patients in a state of subhealth are mostly between the ages of 18 and 45, with urban white-collar workers, especially women, making up the majority. This age group is facing the college entrance examination, business entertainment, enterprise management, interpersonal communication, job competition and other social activities, long-term in a tense environment pressure, if you can not scientifically self-adjustment and self-protection, it is easy to enter the state of sub-health. Are you in a state of sub-health? There are no clear medical indicators to diagnose sub-health, so it is easy to be ignored by people. Generally speaking, if you do not have any obvious symptoms, but long time in one or more of the following states, pay attention to the sub-health has issued an alarm to you: insomnia, fatigue, lack of appetite, easy to fatigue, palpitations, poor resistance, irritability, frequent colds or mouth ulcers, constipation and so on. People in a highly stressful work, study state should pay special attention to these symptoms. Who is the most prone to sub-healthy people? 1, is the mental overburden of people; 2, is the heavy mental labor; 3, is the physical labor burden is heavy; 4, is the interpersonal tension, resulting in a heavy burden of people; 5, is engaged in long-term simple, mechanized work (lack of external communication and stimulation); 6, is the pressure of people; 7, is the life of the irregular; 8, is the dietary imbalance, smoking and alcohol abuse people. Why are some people afraid of cold, some people afraid of heat, why some people should be tonic, some people should be fire, why some people are prone to this kind of disease, some people are not prone to this kind of disease but prone to that kind of disease? These differences between people are largely dependent on the different constitution of people. With different physiques, the ways of treating diseases are definitely different, and even the daily diet, tonic and regimen should also be different. Therefore, Chinese medicine practitioners believe that in order to have better health care and wellness, one must first understand one’s constitution. Human physique can be divided into calm physique, qi deficiency physique, damp-heat physique, yin deficiency physique, qi depression physique, etc., and different physiques have different ways to maintain health. Understand their own physique, usually targeted to regulate, not only can strengthen the body, but also can achieve the effect of the first cure. On the contrary, if you don’t know your own constitution, don’t understand the differences between people’s constitution, watching others eat well, they blindly supplement or fire, it may make the body worse.