If boys want to gain weight, they can choose some exercise or fitness to gain weight, because for thin people, eat less and eat more meals, but don't increase the amount of food per meal. Because most thin people have weak gastrointestinal function, eating too much at one meal often cannot be effectively absorbed, but it will increase the burden on the stomach. I feel that proper conditioning of the intestines and stomach is actually better for thin people, promoting the absorption function of the intestines and stomach, thus fundamentally changing the emaciation problem of the physique. For example, when I was a child, my family was poor and I didn't eat very well. Lack of nutrition leads to my thin figure. When I grow up, my life is very good. After eating a lot of nutrients and nourishing things, I am still so thin. It becomes difficult to gain weight. Later, in Taobao's Chinese medicine satisfaction shop, there was a Chinese medicine specially for thin people. A Chinese doctor is so cool that he has a fever. He told me that Chinese medicine is based on the body, so as to achieve the ideal effect. After eating, everyone is round. Conditioning from the inside out really relieved me a lot.