The benefits of good eating habits When you eat nutritious foods and get regular exercise, you're helping your digestive system work more efficiently. Foods that are high in sugar may give you a quick burst of energy, but it's short-lived and can leave you feeling more tired than before. Instead, reach for foods that will give you sustained energy throughout the day. Complex carbohydrates like whole grains are a great source of long-lasting energy. Drinking plenty of water throughout