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The Sweetnight Blog

SweetNight CoolNest Ultra 14-inch memory foam mattress on a wooden bed frame in a warm, naturally lit bedroom during our six-week review
Cooling
Sweetnight Highlights
Jul 25, 20260 comments

SweetNight CoolNest Ultra Review: We Tested the "Up to 11° Cooler" Memory Foam Mattress

We slept on the SweetNight CoolNest Ultra for six weeks in a hot room and ran surface-temperature tests to check the 11C cooling claim. Here is the real result, plus...
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Body sinking into dark memory foam with heat glowing at the skin and foam contact surface
Cooling
Learning Center
Jul 23, 20260 comments

Understanding Why Memory Foam Can Feel Hot During Sleep

Love the hug of memory foam but hate waking up sweaty? Here is the material science behind why memory foam feels hot, which foam actually sleeps cool, and how to...
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Warm evening shower with steam as a pre-bed routine leading to a cozy bedroom
Cooling
Learning Center
Jul 14, 20260 comments

Warm Shower vs Cold Shower Before Bed: Which Helps You Sleep?

Published: July 14, 2026 ¡ Reviewed by the SweetNight Sleep Comfort Team ¡ 6 min read It sounds backwards: on a hot night, a warm shower cools you down and...
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Person lying awake on a muggy humid night with condensation on the bedroom window
Cooling
Learning Center
Jul 14, 20260 comments

Why Humid Nights Feel Hotter — and How to Sleep Through Them

  Published: July 14, 2026 ¡ Reviewed by the SweetNight Sleep Comfort Team ¡ 7 min read Two nights, same thermometer reading, completely different sleep. One is dry and bearable;...
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Person sleeping snugly in a cold bedroom with a frosted window in cool morning light
Cooling
Sleep&Health
Jul 14, 20260 comments

Does Sleeping in a Cold Room Help You Lose Weight? The Science

Published: July 14, 2026 ¡ Reviewed by the SweetNight Sleep Comfort Team ¡ 7 min read You have probably seen the claim: sleep in a cold room and burn fat...
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Peaceful sleeper in a cool bedroom with an air conditioner set to an ideal sleep temperature
Cooling
Learning Center
Jul 14, 20260 comments

Best AC Temperature for Sleeping: What to Set It To & All-Night Tips

Published: July 14, 2026 ¡ Reviewed by the SweetNight Sleep Comfort Team ¡ 7 min read Quick Answer: What Temperature to Set Your AC for Sleep Set your AC to...
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