Regarding health, the World Health Organization (WHO) believes that health is not only the absence of disease and infirmity, but also the improvement of physical and mental state and good social adaptability. With the development of society, people's understanding of health no longer stays in the traditional sense, thinking that no disease is health. Modern society believes that people must be understood as a whole. Man is the unity of biology, psychology and society, and any physical, psychological and social obstacles are unhealthy.

Traditional Chinese medicine defines health as: eating fast, walking fast, going to the toilet fast, falling asleep fast, and forgetting troubles fast.