There are many reasons why you want to eat meat: first, it may be that you have not eaten meat in recent times, it may be that you want to eat meat in your heart, that is, the feeling of greed, second, it may be caused by conditioned reflexes, because some people especially like to eat meat, daily life to eat meat, in the long run will form a habit of life, it is easy to eat meat. Third, it may also be caused by growth, development or body needs, because meat is rich in a variety of high-quality protein, fat, etc., has a very important role in the development of the human body, so when the body metabolism is relatively strong, and in the process of growing the body, it is easy to have the problem of old meat cravings.