Sleep is an essential part of good health. A good night's sleep can help you feel good, look healthy, work effectively and think clearly.
But sleep is not always so easy to come by. If you sometimes have trouble falling asleep or staying asleep, you're not alone. A 1991 Gallup study found that more than one-third of all Americans suffer occasional or chronic insomnia.
People often are surprised to learn that daytime drowsiness is not an inevitable, harmless byproduct of modern life,
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