← All examples
History · Film

Your ancestors slept twice a night

Why waking at 3 a.m. may be the oldest sleep pattern we have.

Watch on YouTube
Waking up at 3 a.m. might not be insomnia. For most of human history, it was completely normal.

Historian Roger Ekirch spent years reading old court records, diaries and medical books written before electric light. He kept finding the same strange phrase: first sleep, and second sleep.

People went to bed soon after dark. Around midnight they woke up, fully alert, for an hour or more. Nobody worried about it.

They prayed. They talked quietly with their partners. They added wood to the fire, and some even visited their neighbours.

Then came cheap artificial light. Streetlamps, then light bulbs, pushed bedtime later and later, until the two sleeps were squeezed into one solid block.

In 1992, psychiatrist Thomas Wehr gave volunteers fourteen hours of darkness every night. Within a few weeks, many of them drifted back into two sleeps, with a calm waking gap in between.

So the next time you wake up in the middle of the night, don't panic and reach for your phone.

Your body might just be remembering a much older schedule.
176 words pasted. The director turned this into 8 scenes.

Paste your script. Get a video like these.

Your first video is free. You approve the plan before anything renders.

Make your first video