Disease analysis: Hello, muscle-building powder is a sports supplement tailored for bodybuilders. It is made by mixing whey protein powder with easily absorbed carbohydrate powder and adding some other powder supplements, such as glutamine and branched-chain amino acids. Suggestion: However, there are hormones in the muscle-building powder, which will rebound and relax muscles after stopping using it. Still need to pay attention to diet, strengthen physical exercise and keep fit. congratulations