Middle-aged people care about survival, while young people care more about the quality of life. Many young people are troubled by problems such as poor figure, white skin and bad temper, which just gave birth to the emergence of health app.

Health preservation, as the name implies, is to maintain life, and it is an activity to enhance physical fitness, prevent diseases and prolong life through health care methods and means. It can also be said that it is prevention before illness. Health preservation in the modern sense refers to actively maintaining physical and mental health according to the laws of human life process. Maintenance refers to following the law of life, through moderate exercise, plus external nursing and other means, so that the body function and external skin can be conditioned and restored to their proper functions.