Natural Sleep and Its Seasonal Variations in Three Pre-industrial Societies

@article{Yetish2015NaturalSA,
  title={Natural Sleep and Its Seasonal Variations in Three Pre-industrial Societies},
  author={Gandhi Yetish and Hillard S. Kaplan and Michael Gurven and Brian Wood and Herman Pontzer and Paul R Manger and Charles Wilson and Ronald McGregor and Jerome M Siegel},
  journal={Current Biology},
  year={2015},
  volume={25},
  pages={2862-2868}
}
How did humans sleep before the modern era? Because the tools to measure sleep under natural conditions were developed long after the invention of the electric devices suspected of delaying and reducing sleep, we investigated sleep in three preindustrial societies [1-3]. We find that all three show similar sleep organization, suggesting that they express… CONTINUE READING