For protecting health, many people don't know how to maintain it, so there is health education.
Young people, old people and children should receive health education.
Health education is to teach you the basic knowledge of health maintenance. For example, health education will teach you how to do some simple exercises, how to prevent diseases and how to deal with some urgent physical conditions.
On the other hand, health education will teach you how to treat some minor and simple diseases in time, such as minor scratches, or minor colds, or even minor bumps.
Then health education will teach people how to ensure good health, that is, later health preservation. The main target of this is middle-aged and elderly people. Especially the elderly, should know how to keep healthy. Make sure your body is strong enough not to be troubled by some minor injuries and ailments.
Therefore, health education is necessary and should be supplemented. The content of education should be constantly updated, so that more people can join in and know how to keep in good health.