Unit 11 Sleep. Describe the following pictures. Think about these questions. Why do people want to sleep? How do people sleep? Have you ever heard of sleep cycle?. Two purposes of sleep. Physical rest (body rest) Psychological rest (minds rest). Two kinds of sleep. Passive sleep
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In passive sleep, the body is. The heart. We move very . And the brain becomes. This stage of sleep is known as because the brain waves move in a very slow, regular rhythm.
The body several changes: the brain temperature rises, the amount of blood in the brain increases, the body becomes very, very still, and the brain goes from being very to being. The eyes begin to move rapidly. This is a sign---the person is.
When you reach crossroads, you should slow down your car.
She is known as the pioneer of nursing.
They have gone through many dangers before they reached the North Pole.