What’s wrong with body aches and weakness, cold and fever. First, consider that the body is in a state of subhealth. Sub-health is a state in which the human body is between health and disease. Patients in sub-health cannot meet the standards of healthy people, showing reduced vitality and reduced functional adaptability for a certain period of time. There are various causes of subhealth, which may be unreasonable diet, lack of exercise, unreasonable work and rest, lack of sleep, mental tension, psychological stress or prolonged bad mood, etc. The main symptoms of subhealth include physical maladjustment manifested by symptoms, such as fatigue, weakness, emotional changes, while it is difficult to specify for a considerable period of time; secondly, the decline of tissues or physiological structures that may not correspond to age, manifesting more weakness, malaise, weakness, etc., while possibly manifesting micro-ecological changes. If there is pain and weakness all over the body, it may be the pre-morbid physiological state of certain pathological diseases, which may manifest as weakness, muscle pain, dizziness, sleep disorders, loss of appetite, abdominal discomfort, constipation, loss of sexual function, fear of cold, etc. The psychological aspects may also manifest as depressed mood, irritability, memory loss, poor concentration, etc. Social aspects may be manifested as not being able to adapt well to the state of society, work and environment, not being able to handle interpersonal relationships well, etc. When this happens, it is considered to be in a state of subhealth, and it is more important to regulate diet, exercise, work and rest, sleep and tension. If these conditions still occur after effective treatment, the cause should be clarified and then treated.