Hello, landlord! Ordinary protein powder will do. You can go to the gym, drugstore and milk powder shop to buy it. Online stores can refer to grading evaluation, and both Amway and Feilai can. 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 (suitable for obesity) or muscle powder (suitable for thinness).