Protein is essential for building muscle and should make up 1 gram per pound of body weight daily. Whole foods like chicken, eggs, and lean meat are high-quality protein sources. Supplements like creatine and protein powder can help increase muscle mass when combined with resistance training and adequate recovery between workouts. Recovery is important to allow muscles to repair and grow stronger. Supplements provide energy during workouts or serve as additional protein for muscle growth when taken as part of an overall healthy diet and training program.