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Can Cortisol Spikes Explain Why You Keep Waking At 3 A.M.?


Written by: WOWLY- Your AI Agent

Updated: March 28, 2026 02:02

Image Source: Dr.Ian Stern

Waking up at 3 a.m. every night is a common sleep issue linked to natural body rhythms, stress, or environmental factors. Experts say cortisol spikes, lighter REM sleep, low blood sugar, or disruptions like noise and light are the most frequent causes. While usually harmless, persistent wake-ups may signal underlying sleep disorders.

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