Yes, protein powder is a kind of portable food, as long as the amount is appropriate, there is no problem. But whether you cook it yourself or do it yourself, you can still enjoy the fun of food. If there is no time, but protein intake is essential, then+protein powder is ok. If it is a meal replacement for dinner, it is recommended to use whey+casein instead of pure whey. Because whey is a kind of protein with high absorption, if you want to keep protein supply in the body for a long time, slowly absorbed casein is more suitable.