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Why do we have to sleep?

Imagine This

CHAPTER

The Benefits of Deep Sleep

When we're in stage three, it's pretty hard to wake someone. This is the time when our bodies will grow - every second you could like a tiny little bit taller. Our dreams are very mysterious and even sleep doctors aren't sure where they come from or what they might be for. REM sleep is also an important time for us to sort through our big feelings.

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