First, reading a book, although some knowledge in the book is very abstract, it is after all summed up knowledge, and there is no harm in knowing more. Second, the accumulation of life As the saying goes, a long illness is the truth. There are many ways to maintain health in life. Basically, everyone has a regimen. Therefore, it is most effective to decide what to eat and drink according to your physical condition. Third, you can learn a lot by discussing with people around you, especially those who like health preservation. For doctors, most of them master pharmacological knowledge, that is, prescribe the right medicine, and rarely use drugs for health care. Except for some health products, others are the healthiest as far as possible.