In fact, a normal diet is ok, protein powder is not necessary, and protein powder is not very effective. You can eat a little protein powder when your diet is inconvenient.

Diet: Meat, fish, milk, beans and eggs are rich in protein, and protein is the most needed for muscle building; And eat more fruits and vegetables, eat less and eat more meals. It is absorbed right after exercise and eaten after 30 minutes. Preferably digestible, such as eggs and milk. If it is inconvenient to eat, you can use protein powder or muscle powder (thin people are more suitable to eat muscle powder to gain weight first).