Health care, health preservation, the essence is to "raise", please start to maintain it when you are young, just like a piece of land, don't wait for it to dry up before irrigation, take care of it at any time, and don't wait for it to be lost before thinking about maintenance. At that time, it was like repairing a person's lost body, just like a savings card. When you are young, you will store more, and when you are old, you will become richer (healthier). When you are young, you will overdraw, and you must pay this debt when you are old.