65438+ 0 hours after lunch, exercise is better. The main purpose of drinking protein powder is to supplement the protein that our body needs, which has the function of building muscles, but it depends largely on the intensity of your exercise. Only when it reaches a certain strength will the muscle fiber be damaged, so that the muscle fiber will have a chance to repair; The quality of protein powder determines the speed of muscle growth. The best protein on the market now is hydrolyzed whey protein.