Muscle-building supplements can improve physical performance during resistance training and help stimulate muscle growth. Protein and creatine are two popular supplements that can have these effects.

Resistance training, such as weightlifting, puts a high degree of strain on the muscles. Over time, the muscles adapt, becoming stronger and, typically, larger.

Many muscle-building supplements are available for people wishing to improve their athletic performance and enhance their muscle growth.

Beginners do not usually require supplements, because they will build muscle quickly after starting resistance training. Supplements are more beneficial for people at an intermediate or advanced level or whose performance has plateaued.