Should you go back to bed?

I’ve posted before on how little sleep you can get away with:

…by the end of two weeks, the six-hour sleepers were as impaired as those who, in another Dinges study, had been sleep-deprived for 24 hours straight — the cognitive equivalent of being legally drunk.

The best part was, if you asked them, they felt fine and didn’t realize they were impaired (the same way drunk people respond to such questions, minus the slurring.)

Why else is it important?

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