Second: study on time and have a reasonable amount of exercise every day. Exercise more in busy months and less in idle months. Unlike cities, the division of labor is refined and solidified. Many people sit in the office for a day, and after a long time, the problem comes.
Third: the form of labor. The work in the city is more mental, so you should worry about it. Rural labor is more inclined to manual labor. Mental labor is laborious and will only destroy the body and mind, while physical labor develops muscles and accelerates the metabolism of new dust.