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Mind & Sleep

Cortisol spikes at night: why your stress levels surge at 3 AM

It's 3:07 AM. Your eyes snap open in the dark, your heart rate has already climbed, and your mind begins cycling through the day's unfinished business before you've taken a conscious breath.

September 22, 2026 · 14 min read

Cortisol spikes at night: why your stress levels surge at 3 AM

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