Proper nutrition is crucial for maintaining adequate energy levels in children. A balanced diet that includes a mix of carbohydrates, proteins, and fats, as well as essential vitamins and minerals, is necessary. Foods rich in iron, such as lean meats and leafy greens, and foods high in complex carbohydrates, such as whole grains, can provide sustained energy. Additionally, staying hydrated is important as even mild dehydration can cause fatigue.