Protein is critical in a post-workout meal as it aids in muscle repair and recovery. After exercising, muscles undergo tiny tears that need to be repaired for growth. Consuming protein helps synthesize new proteins, thereby promoting muscle hypertrophy. It also contributes to replenishing glycogen stores when paired with carbohydrates. This combination enhances recovery and prepares the body for subsequent workouts. Additionally, protein can help prevent muscle loss during a calorie deficit, making it an essential macronutrient post-exercise.