The World Health Organization definition of health includes three aspects: 1, physical health: in terms of the body, no serious diseases, such as hypertension, diabetes, etc.; 2, mental health: mental health plays an important role in the definition of health, need to maintain a good state of mind, such as happy, happy, etc.. No painful experience, that is, pessimism, sadness, excessive anxiety and other bad emotions; 3, good social adaptability: in the work, and the surrounding people, things to maintain a good relationship between people and the environment to maintain a good adaptation. That is, not only physical health, mental health, more important is to adapt to society, to meet the above three points is the real health.