How Did Humans Sleep Before Beds?
Doodz
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How Did Humans Sleep Before Beds?
138 просмотров · 7 дней назад
Doodz
36 подписчиков
138 просмотров · 7 дней назад
From grass laid over ash in a South African cave 200,000 years ago to the memory foam you'll sleep on tonight, every human bed has answered one brutal question: how do you stay alive while you're unconscious?
You Will Learn:
• Shorter but Deeper Sleep: Why humans sleep less than any other primate studied, yet a bigger share of it is REM, and how fire, shelter and group sleeping made that trade possible.
• The 200,000-Year-Old Bed: How people at Border Cave laid grass over a layer of ash, likely to block ticks, then burned the old bedding to build the next one.
• Bug-Killing Leaves: How 77,000-year-old bedding at Sibudu was topped with river wild quince leaves that contain chemicals that kill insects and their larvae.
• Headrests, Demons & a Folding Bed: How Egyptian headrests were believed to guard the head against demons in the afterlife, and why Tutankhamun was buried with the ancestor of the camping bed.
• First Sleep, Second Sleep & the Night Watch: The debate over whether humans naturally woke at midnight, and why across 220 hours of Hadza nights, every adult was asleep at once for just 18 minutes.
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