Regulating blood sugar levels: Eating regularly spaced meals can help regulate your blood sugar levels. When you go too long without eating, your blood sugar can drop, which can lead to feelings of fatigue, lightheadedness, and irritability. Conversely, when you eat too frequently or consume high-carbohydrate or sugary foods, your blood sugar can spike, followed by a crash that can leave you feeling hungry and tired. By eating meals spaced about 4 hours apart, you can help keep your blood sugar levels steady and avoid these fluctuations.