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What about second sleep?
No screens, no problem.
Is it dangerous?
"The noise is fairly pleasant; it kind of resembles a rush of water."
It seems wrong, but it's backed by research.
It's a question we've all asked our pillows.
Lucid dreaming enters the laboratory.
We know it's hard, but there are good reasons to try.
See what science says.
We're exhausted just thinking about it.