Excite and Inhibit

Check it out! A 12th Grader in United States wants to know, "why does it get sleepy?"

Here's an answer:
We don't fully know why we sleep, but sleep helps consolidate memory, grow and repair tissue, maintain emotional states. Sleepiness gets you to sleep. Read More

Wow, the brain is so cool!
Hey, what's the one thing you wish you knew about the brain?

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