Unhealthy but longevity

Health and longevity is our unremitting pursuit, so what is the relationship between health and longevity? In the face of sudden accidents, it is impossible to judge whether unhealthy people will live long, only whether people with physical fitness will live long. From our general understanding, to live a long life, you need to have good physical condition. Sickness seems to have nothing to do with longevity. But in our life, there are often such examples. A healthy person will die of sudden illness, while a weak patient will live a long life. Therefore, there is a proverb called "If you want to live a long life, you should take a little sick." So is this sentence reasonable? The process of life is to constantly overcome various diseases and accidents in life, because a person will not die of diseases and accidents for no reason. We also have a saying that "a long illness makes a good doctor", because people with many patients often go to hospitals and often deal with doctors. They know more about their physical condition, the treatment of some common diseases and the matters needing attention at ordinary times than ordinary people. If you can pay attention to it in your life, you can not only prolong your life, but also learn a lot of medical knowledge and know how to deal with emergencies and physical discomfort. On the contrary, those who are usually healthy rarely talk to doctors, so they not only don't know about diseases, but also don't know how to maintain their bodies and their physical condition. I often don't know when my body has a chronic disease. In this way, once you get sick, you are usually in a serious stage of the disease. If not treated in time, it may hurt your life. Everything has advantages and disadvantages, and so does disease. While enduring the pain caused by diseases, we also learned how to take good care of our bodies and how to prevent these diseases. Then you won't get a serious illness. Even if you get a serious illness, it's easy to know it in advance and treat it in time, so nothing serious usually happens, which is also a factor of longevity. In short, the sentence "If you want to live a long life, you must take some diseases" is reasonable. From it, we can also know that although we can't stop the arrival of diseases, early detection and early treatment are very beneficial to us.