Unlike your car, your body doesn’t run equally well whether it’s completely topped off or just a drop away from empty. So it’s critical to keep your fuel level relatively even throughout the day — eating too much at one meal or skipping them entirely can leave you lagging. Plus, once you’re famished, it’s hard to make smart food choices. No wonder nutrition experts are virtually unanimous in their advice to eat small meals — as many as six — throughout the day. Try to eat every three to four hours, and stick with foods that take the edge off and prevent rebound hunger. That means meals that contain whole, intact carbohydrates; lean protein; and/or nutritious fats.