Question

What is dream and why do we dream.​

Answer 1

Answer:

Dreams are hallucinations that occur during certain stages of sleep. They're strongest during REM sleep, or the rapid eye movement stage, when you may be less likely to recall your dream. Much is known about the role of sleep in regulating our metabolism, blood pressure, brain function, and other aspects of health.

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Explanation:

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Answer 2

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What is dream?

Dreams are what a person sees and hears in their mind when they are sleeping. They are often similar to real life in some ways, but can also be very strange. Dreams can seem so real while they happen that the person might think that they are awake when actually they are asleep.

Why do we dream?

The most honest answer is that we do not yet know the function or functions of dreaming. They feel that sleep, and within it REM sleep, have biological functions (though these are not totally established) and that dreaming is simply an epiphenomenon that is the mental activity that occurs during REM sleep.