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The Nuance

This Is Why You Keep Waking Up In the Middle of the Night

The science behind that silent, malfunctioning alarm clock in your brain

It’s three a.m., but you don’t need to check your phone to know that.

You know it’s that time because you always wake up at three a.m. It’s like your brain is equipped with a…




Your life, sourced by science. A publication from Medium about health and wellness.

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Markham Heid

Markham Heid

I write about health, science, and psychology. My work has appeared in Time magazine, the New York Times, Vice, and elsewhere. I live in Germany.

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