There are ways to gain weight scientifically, first of all, pay attention to eat more high-calorie, high-protein, high-fat food, increase the number of meals, three meals a day into four meals a day or five meals a day. At the same time, we should pay attention to increase sleep, not only to nap, but also strive to go to bed before 10 o’clock every night, and sleep a full 8 hours a day. In addition to diet and sleep, you can also take herbs that strengthen the spleen, such as Atractylodes macrocephala, Poria, Licorice, Astragalus, and Angelica. These medicines can effectively improve the function of the spleen and stomach, making people stronger, and they can increase weight and make people healthier.