If you need to gain muscle and do a lot of exercise, you can eat a certain amount of protein (such as egg protein and protein powder). ) About half an hour after exercise;
If you need to lose weight, it is best to drink boiled water or eat fruits such as apples.
Eat more foods rich in protein and gain weight by strengthening muscles, and the effect is not so obvious. The most important thing is to increase your own fat and various nutrients.