Fueling up after a workout not only supports muscle recovery, but it can also help you build muscle, boost endurance, and help you reach your fitness goals. Key Nutrients to Focus on Post-WorkoutA balanced snack or meal is key for the best post-workout fuel. Protein: For Muscle Repair and GrowthProtein is one of the most important nutrients for post-workout recovery. Pairing carbs with protein can restore muscle glycogen more efficiently than carbs on their own. Aiming to refuel after exercising with a mix of protein, carbohydrates, and fluids is essential for recovery, muscle building, and performance.