Protein plays a critical role in an exercise regimen by providing the necessary building blocks for muscle repair and growth. Consuming sufficient protein promotes muscle protein synthesis, which is essential for recovery after workouts. It also helps maintain muscle mass during periods of calorie restriction or weight loss. In resistance training, protein intake supports strength gains and enhances exercise performance. Timing and type of protein consumed (e.g., whey or plant-based) can further influence recovery and adaptation to training. Thus, integrating adequate protein in daily nutrition is vital for anyone engaged in regular physical activity.