What did ancient humans do when they couldn't sleep?

What did ancient humans do when they couldn't sleep? This video reveals why waking up at night isn't broken sleep — it's how ancient humans naturally slept for most of history. For most of human history, sleep wasn't one unbroken block. Historian Roger Ekirch uncovered evidence of "first sleep" and "second sleep" — a natural two-part night that vanished once electric light took over. This video explores what ancient humans did when they couldn't sleep, the science of segmented sleep, and a real experiment that recreated ancient nighttime conditions. You'll learn why waking up at 3am may be biologically normal, how hunter-gatherer societies like the Hadza used fragmented sleep for group safety, and why reaching for your phone at night might be the real problem — not the waking itself. Timestamps: 00:00- Intro 00:45- The Myth of Unbroken Sleep 01:45- First Sleep and Second Sleep Explained 03:00- Why Segmented Sleep Disappeared 04:05-The 1990 Sleep Experiment 05:15- What Your Body Still Remembers 06:15- Why Ancient Humans Slept in Shifts 07:20- The Hadza and the Watch Rotation 08:15- What This Means for You Tonight If you're into human history, sleep science, and ancient humans, like this video, subscribe for more, and comment your thoughts below. #AncientHumans #SleepScience #HumanEvolution #SegmentedSleep #Insomnia #HumanHistory #SleepPsychology #Anthropology