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The JournalSleep

The 4am wake-up, explained

You fall asleep fine. You wake at four, wide awake, for no reason you can name. Here's what's actually happening — and what has evidence behind it.

Posteri Editorial 7 min read

Sample article, written for product preview. Not yet published editorial.

Expert reviewed by Dr Nia Ferreira, MD, Sleep Medicine · June 2026

Early-hours waking is one of the most common — and most under-discussed — changes of perimenopause. It is also one of the most treatable.

Why four in the morning

Sleep is lightest in the second half of the night, core body temperature is rising, and cortisol is beginning its morning climb. Add a hormonal environment that is less stable than it was, and the small wake-ups everyone has become full ones.

What actually helps

  • A fixed wake time, seven days a week — more powerful than a fixed bedtime
  • Getting out of bed after roughly twenty minutes awake
  • Keeping the bedroom genuinely cool
  • Treating night sweats as a separate problem to solve, if you have them
  • CBT-I, which outperforms sleep hygiene advice in trials

Lying in bed awake teaches your brain that bed is where thinking happens. Breaking that association is the single highest-yield change most women make.

Sources

  • Insomnia disorder: management — NICE CKS
  • Sleep disturbance in the menopause transition — Sleep Medicine Clinics

Posteri Journal content is educational. It does not diagnose, prescribe or replace personalised clinical care.

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