Protein powder is definitely indispensable for rapid muscle gain. As for the brand, you can find it yourself. It's basically the same. The method of taking is generally about 2 grams per kilogram of body weight 1, depending on your exercise and consumption. Take it once within half an hour after exercise, preferably with breakfast. The side effects are basically gone. Fat is made of fat, and muscles are made of protein. Don't be afraid to get fat after eating this food, ha.