Why 90% of Human History Slept Cold | History for Sleep

Описание: Why 90% of Human History Slept Cold is a quiet journey into the nightly reality of our ancestors. For most of human existence, people did not sleep in warm bedrooms or insulated homes. Instead, they rested in landscapes where night air cooled quickly after sunset and warmth was limited to fire, shelter, and shared body heat.

In this episode, we explore why 90% of human history slept cold and how early humans adapted to that environment. Using insights from archaeology, anthropology, and evolutionary biology, the video explains how prehistoric campsites, simple shelters, and small hearths shaped the way humans slept for tens of thousands of years. You will see how ancient sleeping spaces were organized, how fires provided limited warmth, and why the human body evolved in conditions where nighttime temperatures often dropped after sunset. By understanding why 90% of human history slept cold, we begin to see modern sleep in a new perspective—one shaped by thousands of generations living close to the natural rhythms of the Earth.

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