Sub-health is a state of overdraft, with various discomforts, but no organic diseases. Sub-healthy people are very common, almost in all walks of life and at all ages. The reasons for sub-health are as follows: 1. Long-term overdraft of brain and physical strength leads to overload operation of body organs, which is manifested as fatigue, insomnia, impatience, distraction, memory loss, long-term constipation or loose stool, bone pain and sexual dysfunction; 2. Natural aging of human body, aging of tissues and organs: manifested as physical exhaustion, menopausal syndrome, insomnia and dreaminess, polyuria, endocrine disorders, etc. 3. Unbalanced nutrition, unreasonable diet structure and lack of scientific guidance: adolescents are stunted, overweight or thin, adolescents have signs of chronic diseases, nervous system, respiratory system and digestive system are uncomfortable, and the elderly are unbalanced in weight, osteoporosis and immune decline; Sub-health is the precursor of disease. If it is not corrected for a long time, it will definitely lead to illness.