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Previous episode Deep sleep: what happens to the sleep pressure while you sleep

How sleep works: what pulls you to bed, and what your brain does all night

REM sleep: why your brain is busy while your body cannot move

Late in the night, your brain waves look almost awake, while your body lies still and cannot move. Why would a brain lock its own body?

  1. 1 Monday, 5 am, in a long stretch of REM. You dream you are inside the board game, and a die as tall as you rolls after you. You run.you

    Monday, 5 am, in a long stretch of REM. You dream you are inside the board game, and a die as tall as you rolls after you. You run.

  2. 2 In the dream you run as fast as you can. In bed, your legs do not move at all. Only your eyes dart under the lids, and you keep breathing.eyes: movinglegs: still

    In the dream you run as fast as you can. In bed, your legs do not move at all. Only your eyes dart under the lids, and you keep breathing.

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