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Homepage / Artificial Light

Tag: Artificial Light

Segmented sleep between first and second sleep in an early modern household

Why People Once Slept in Two Shifts: The History of Segmented Sleep

By Hidden Frontiers Editorial TeamPosted on August 26, 2026September 5, 2026

Why Did People Once Sleep in Two Separate Shifts Every Night? For many modern sleepers, waking at 2 a.m. can feel like something has gone wrong. Yet historical records contain Continue Reading →

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