Your brain needs glucose.....

On a starved state, the body tends to go on a hunt for stored fuel to keep your energy level up. Your brain needs glucose for it to regulate various processes. If you don't eat, your brain doesn't get its regular supply so it goes searching for fuel in your system and will resort to either using your stored carbohydrates or converting your fat stores into glucose. By the time lunch comes, you're so starved that your brain sends off the warning signals to refuel as much as you can stuff into your system. Because of this, you have a higher tendency to take in large portions of food and go on a binge to compensate for the lost energy. It is that or you strengthen the impulse to reach for a mid-morning snack – which mostly consists of high-fat sweets, which can wreak havoc on your weight loss program.