Foods that help maintain stable energy levels typically include complex carbohydrates, such as whole grains, fruits, and vegetables. These foods release energy slowly, preventing spikes in blood sugar. Additionally, incorporating healthy fats from sources like nuts and avocados, along with lean proteins, can further stabilize energy levels. Staying hydrated is essential as well, as even mild dehydration can lead to fatigue. A balanced diet rich in these components supports sustained energy, enhancing both focus and productivity throughout the day.