Nutrition keeps up, but the reason why you are still thin is that your stomach is not very good. Maybe you don't feel it, but your stomach doesn't absorb nutrients very well. In fact, some people are born thin, perhaps because of heredity. In their words, whatever they eat will not make them fat. You can't get fat even if you soak in the gas tank all day. Like this, I suggest starting with your stomach to promote its absorption function. Like the usual Jianwei Xiaoshi tablets, the effect is not very good. You are very thin. Don't be afraid to exercise. Don't think that exercise will make you slim down. This is a wrong understanding. Long-term exercise will make your appetite better, and slowly your appetite will open and your appetite will increase. The more food you eat, the more you naturally absorb. Another is that hospitals or pharmacies have fattening drugs that will also help you gain weight. However, it is recommended not to take more drugs. General drugs will contain hormones, and long-term consumption will cause harm to the human body. Personally, I suggest you consider the former