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Sleep journal

The science, the product and the people behind cooler nights

We publish what we learn: how body temperature drives sleep onset, why bedroom noise matters as much as airflow, and unedited stories from people who bought an Aerwell to fix a specific problem.

Sleep scienceProduct benefitsCustomer stories

Featured · Sleep science

How to stop night sweats: what actually works, in order

A practical, cheapest-first order of fixes for waking up soaked — from bedding and room temperature to airflow under the duvet and when to call a doctor.

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Published
September 7, 2026
Read time
8 min
Written by
Aerwell Sleep Desk
Sleep science

How to sleep cool without air conditioning: 11 things that work

No AC, hot bedroom, and a fan pointed at your face that just dries your eyes out. Here is what actually lowers your sleeping temperature — ranked by cost.

September 6, 20267 min

Sleep science

The best bedroom temperature for sleep — and why yours feels wrong

16-19°C is the number everyone quotes. Here is where it comes from, why your thermostat can read perfectly while you still overheat, and what to measure instead.

September 5, 20266 min

Sleep science

Why do you get hot when you sleep? Causes and fixes for night sweats

You fall asleep fine, then wake at 2am overheated and damp. Here are the seven most common reasons it happens — and the fixes that actually work for hot sleepers.

September 3, 20267 min

Sleep science

Why a cool bedroom helps you fall asleep faster

Your body has to drop its core temperature to fall asleep. Here is what the research says about the temperature window that makes it happen — and why airflow matters more than a cold room.

July 14, 20266 min

Sleep science

How quiet is quiet enough? Noise, sleep stages and the 30 dB rule

The WHO recommends bedroom noise stay below 30 dB. Here is what that number actually sounds like, and why a loud fan can undo the benefit of a cool bed.

July 28, 20265 min

Product benefits

How an under-duvet bed fan actually works

A bed fan is not a smaller room fan. It targets the 30cm of trapped, humid air between you and your duvet — which is where hot sleep actually happens.

August 5, 20265 min

Product benefits

Bed fan vs air conditioning vs tower fan: an honest comparison

Three ways to survive a hot night, compared on noise, running cost, partner-friendliness and how well they actually stop night sweats.

August 12, 20266 min

Customer stories

“I sleep days and my partner sleeps nights” — Marcus's story

A hospital shift worker on how targeted airflow ended two years of thermostat negotiation and daytime sleep that never felt like rest.

August 18, 20264 min

Customer stories

Night sweats and menopause: Dana on getting the night back

“I wasn't looking for a gadget. I was looking for anything that meant I didn't have to change the sheets at 4am.”

August 25, 20264 min

AERWELL

Sleep-climate gear built for hot sleepers. Designed to be quiet first, powerful second.

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