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Don't skip meals, especially breakfast.
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Get regular exercise.
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Eat high-energy foods, including whole-grain breads and cereals, fruits and vegetables.
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Avoid fatty foods. Fat takes a long time to digest and makes the body feel sluggish.
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Sugar's OK, but don't overdo it.
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Get a good night's sleep. Getting even an hour less than you need can result in slower mental functioning.
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Drink plenty of fluids. You need to drink the equivalent of a half-gallon of fluid a day.
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Coffee and tea will give you a lift -- in moderation. Caffeine is a stimulant.
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