Health is necessary.Life is movement,but also have a good mentality.The meaning of health,at different times very different.Early health,refers primarily not sick,not disability.Therefore,the early concept of health is not sick as long as the organs of the body is healthy.With the social progress,economic development,people's health needs towards a higher level of health have had a corresponding change,they are not satisfied with no disability,and longevity requirements.Subsequently,it has been found,just not enough long life,and if the quality of life is not high,and very painful,can not enjoy life's pleasures.Therefore,people would seek not only to live well,live exciting,higher quality of life,not only to extend life expectancy,healthy life is more important to be greatly extended,but also means that life is not only better,but also long.As the understanding of health has changed,so he pursuit of physical,psychological and social adaptation of the perfect combination of the state.That is to say,from the traditional biomedical model to the biological - psychological - the changing pattern of social medicine in the process of health given to a deeper,richer content.
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