Researchers have discovered what causes a switch to flip in our brains and wake us up. The team studied the sleep homeostat in the brain of fruit flies. Each fly has around two dozen sleep-control neurons: If the neurons are electrically active, the fly is asleep

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Researchers have discovered what causes a switch to flip in our brains and wake us up. The team studied the sleep homeostat in the brain of fruit flies. Each fly has around two dozen sleep-control neurons: If the neurons are electrically active, the fly is asleep