The most important thing for the fastest muscle growth is to have a scientific exercise plan. Strength training is not the most important factor for the fastest muscle growth. The most important factors are exercise, diet and rest. Simply doing it well won't make muscles grow fast. Appropriate protein should be supplemented after strength training, generally 1.5g ~ 2.5g per kilogram of body weight, and appropriate carbohydrates should be supplemented immediately after strength training to prevent muscle loss. After strength training, you need a proper rest. Only by getting enough sleep can the muscles grow quickly.