Strange statement, the relationship between protein and the amount of exercise ... protein is a necessity for muscle growth. Of course, high-quality protein is the best. Protein powder, remember whey protein or casein, is good for muscle gain. Ordinary amateur bodybuilders can supplement basic protein through diet. If you are a fitness enthusiast and train more than 6 times a week, your protein needs protein powder. Of course, excessive intake of protein has a heavy burden on your kidneys. You weigh it. If you don't practice hard, don't trust protein powder too much.