DREAMS

A dream is a series of sensations, images, or thoughts that pass through a sleeping person's mind. Find out what research shows about the reasons that we dream, and read about theories of dream interpretation.

How much do you know about sleep?

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How Lucid Dreaming Works

If you could control your dreams, what would you do? Grow wings and fly, travel to ancient Rome, dine with Marilyn Monroe, open opera season at the Met? It could be possible.

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SYMPTOM CHECKER

DISEASES A-Z

Learn more about what ails you. Here are some common symptoms.

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Common Symptoms: