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People in industrial societies get more sleep than hunter-gatherers
Individuals in industrialised societies seem to sleep for longer than people in non-industrialised ones, but their circadian rhythms are more out of sync
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Individuals in industrialised societies seem to sleep for longer than people in non-industrialised ones, but their circadian rhythms are more out of sync
Sleeping a solid 8 hours isn't the whole story and the quality of your sleep might matter more. But what does sleep quality mean and how can we measure it?