How Did Ancient Humans Survive Without Sleep at Night?

At 3 AM, wide awake, staring at the ceiling, it feels like something is wrong with you. But what if this used to be completely normal? For much of human history, many people slept in two phases: a first sleep and a second sleep, often waking naturally in between. During that quiet hour, they prayed, reflected, talked, or simply rested before falling asleep again. In this video, we explore the forgotten history of segmented sleep, the Sentinel Hypothesis, how the Industrial Revolution changed our nights, and why waking up at 3 AM may not mean you're "bad at sleeping." Maybe you're not broken. Maybe you're remembering something ancient. 👍 If you enjoyed this video, leave a like, share it with a friend, and subscribe for more fascinating stories about ancient humans, history, and the science behind everyday life.