Dietary diversification
If you want to gain weight, you must first gain weight scientifically and gain weight for health. Besides a balanced diet, you should also keep enough and good sleep. If people get enough sleep, their appetite is better, which is also beneficial to the digestion and absorption of food.
If you want to gain weight, you should not only eat meat, eggs and poultry rich in animal protein, but also eat foods rich in fat and carbohydrates (such as starch and sugar), and eat more soy products, vegetables and fruits. As long as the diet is nutritious and conducive to digestion and absorption, plus appropriate exercise, you can become strong.