Dietary changes can significantly impact energy levels during workouts by ensuring that the body has the necessary nutrients for optimal performance. A balanced intake of carbohydrates, proteins, and healthy fats provides sustained energy. For instance, complex carbohydrates, like whole grains, supply lasting energy, while sufficient protein supports muscle repair and growth. Hydration is also vital, as even mild dehydration can lead to decreased performance and increased fatigue. By aligning diet with energy needs, individuals can enhance their workout effectiveness and overall performance.