A balanced diet provides essential nutrients that contribute to sustained energy levels by ensuring a steady release of glucose into the bloodstream. Combining macronutrients like carbohydrates, proteins, and fats allows the body to maintain energy reserves without spikes or crashes, which can be detrimental during physical activity or daily tasks. Proper hydration also plays a pivotal role in maintaining energy levels, as even mild dehydration can lead to fatigue and decreased performance. Therefore, a balanced diet supports optimal physical and mental functioning throughout the day.