If you're feeling a little hungry, a healthy snack may be a boost to both body and mind.

Studies show that a small dip in blood sugar levels, such as when people skip breakfast, can contribute to a mental fog later in the day. To keep your mind sharp at work, start your day with breakfast each morning and keep a healthy snack, such as almonds or fruit, on hand for whenever your stomach starts to rumble.

To avoid overeating, always listen to your body. Only snack when you truly feel hunger. If your stomach feels hollow and you hear the beginnings of rumbling, seek out a healthy snack that will help keep your blood sugar levels stable, such as high-fiber crackers or fruit. Foods with a low-glycemic index, such as whole-grain foods or high-fiber fruits and vegetables, will have the best effect on your blood sugar levels and your mental performance by raising blood sugar levels slowly and steadily. Sugary snacks such as cookies, candy, or soda, which have a high glycemic index, can cause blood sugar levels to spike quickly then decrease dramatically.

RealAge Benefit: Eating breakfast can make your RealAge as much as 1.1 years younger.

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