Hunter-gatherers get less sleep than people in industrial societies

People in industrialised societies seem to sleep for longer than those in non-industrialised ones, but their circadian rhythms are more out of sync

​People in industrialised societies seem to sleep for longer than those in non-industrialised ones, but their circadian rhythms are more out of sync People in industrialised societies seem to sleep for longer than those in non-industrialised ones, but their circadian rhythms are more out of sync