每日英语听力

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Hello, Fred. You don't look so good. What's the matter? I just didn't have a good sleep. It seemed I dreamed all night.

Do you dream a lot when you sleep? Yes.

In fact, everybody dreams. And everyone needs to dream in order to stay healthy.

There are two kinds of sleep, active sleep and passive sleep. The passive sleep gives our body the rest that is needed, and prepares us for active sleep in which dreaming occurs.

The dream stage is very important in our sleep cycle. When the person is dreaming, the eyes begin to move.

Through the night, people alternate between passive and active sleep. The cycle is repeated several times throughout the night.

Do you know how long people usually dream during eight-hour sleep?

For about one and a half hours on average.

So we need active sleep because dreaming helps us to rest our minds.

I see. All people experience dream cycles.

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