First, the main organs are disease-free, the body shape is well developed and uniform, and all human systems have good physiological functions and strong physical activity and labor ability, which is the most basic requirement for health;
Second, it has strong resistance to diseases and can adapt to environmental changes, various physiological stimuli and the effects of pathogenic factors on the body. The traditional concept of health is "health without disease", and the modern concept of health is overall health. The World Health Organization puts forward that "health is not only the absence of disease in the body, but also mental health, good social adaptation and morality".
Extended information The meaning of modern health is not only that the body is not sick in the traditional way. According to the explanation of "World Health Organization", health not only refers to a person's physical illness or weakness, but also refers to a person's physical, psychological and social integrity, which is a relatively complete scientific concept of health in modern times.
The meaning of modern health is diverse and extensive, including three aspects: physiology, psychology and social adaptability, in which social adaptability ultimately depends on the physical and psychological quality. Mental health is the spiritual pillar of physical health, and physical health is the material basis of mental health.