Function is to increase muscle development, muscle group circumference and weight. Instead of gaining weight. But it is unhealthy for people to have too much fat. It is also necessary to cooperate with scientific exercise to supplement muscle powder. If you only eat muscle powder and don't exercise, too much protein will cause great damage to renal function. If you want to gain weight and strength, then you should eat some muscle powder and do some physical exercise. You can easily gain 20 pounds in three months.