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adicionou um novo artigo Health

2026-06-29 14:19:25 -

The Switch That Keeps You Awake: What Narcolepsy Revealed About Wakefulness — and the Truth About the "Smart Drug"

We tend to treat being awake as the default setting—the thing that simply happens whenever we aren't asleep. It isn't. Wakefulness is something your brain actively builds and defends every second of the day, using a dedicated crew of cells and chemicals. We figured out how it works largely by studying people—and dogs—who couldn't stay awake. And that same biology explains a...

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