Why Sleeping Cool Is the Secret to Better Rest (and How to Do It Right)

It’s no secret that a good night’s sleep makes everything better. Your focus sharpens, your mood lifts, and even your metabolism works more efficiently. But what many people don’t realize is just how important temperature is to sleep quality.

Let’s break down the science of why a cool sleep environment is essential and how one simple change can help you sleep deeper, longer, and better.

Why Your Body Sleeps Better in the Cold

Your body temperature naturally drops at night as part of its circadian rhythm. In fact, sleep researchers have found that a core body temperature drop of about 1–2°F is necessary to initiate sleep [1]. When your room is too warm, it interferes with this process, making it harder to fall and stay asleep.

Experts recommend keeping your bedroom between 16–19°C (60–67°F) for optimal sleep [2]. Anything higher can disrupt your REM sleep and increase wakefulness.

Sleep Disruption and Overheating

Hot sleepers often wake up in the middle of the night drenched in sweat, uncomfortable and unrested. This disruption isn't just annoying, it’s a real threat to sleep quality. Studies show that thermal discomfort leads to fragmented sleep, reduced deep sleep, and daytime fatigue [3].

And if you’re the kind of person who scrolls your phone before bed, works late on your laptop, or lives in a warm climate, your body may already be struggling to cool down when it's time to rest.

Enter the Cooling Blanket: Your New Sleep Hack

One of the easiest ways to regulate your temperature without blasting the air-con is by switching up your bedding. The Premium Cooling Blanket is designed to wick away heat, stay breathable all night, and help your body stay in that cool, sleep-friendly zone.

It’s lightweight, moisture-wicking, and engineered with fabric that actually feels cool to the touch. For those who toss and turn due to overheating, this can be a total game-changer.

Perfect for the Burnt-Out Remote Worker

If you're working long hours at home, bouncing between Teams calls and deadlines, your sleep may be suffering, even if you're in bed 8 hours a night.

Swapping to a cooling blanket is one of the simplest, non-tech “sleep upgrades” that helps align your circadian rhythm and cool your nervous system at night.

The Science Behind It

• A 2018 study published in Nature and Science of Sleep showed that environmental temperature plays a vital role in maintaining healthy sleep architecture, particularly in promoting slow-wave and REM sleep [4].

• Cooling bedding can reduce core temperature more effectively than traditional blankets, allowing users to fall asleep faster and stay asleep longer [5].

Other Ways to Cool Your Sleep Space

Pair your cooling blanket with these simple changes:

• Turn off screens at least 30 minutes before bed

• Use blackout curtains to keep heat out during the day

• Keep a fan on or crack a window open at night

• Sleep in breathable, natural-fiber sleepwear

Final Thoughts

Your sleep isn't just about how many hours you get. It's about the quality of those hours. And if you're constantly waking up sweaty, restless, or overheated, your body isn't hitting the deep, restorative phases it needs to thrive.

Investing in a cooling blanket isn't a luxury. It’s a science-backed way to help your body do what it was designed to do: rest, repair, and recover.

References:

1. Krauchi, K., & Wirz-Justice, A. (2001). Circadian clues to sleep onset mechanisms. Neuropsychopharmacology, 25, S92–S96.

2. National Sleep Foundation. (n.d.). What’s the Best Temperature for Sleep? https://www.sleepfoundation.org/bedroom-environment/best-temperature-for-sleep

3. Okamoto-Mizuno, K., & Mizuno, K. (2012). Effects of thermal environment on sleep and circadian rhythm. Journal of Physiological Anthropology, 31, 14.

4. Lan, L., Lian, Z., & Pan, L. (2018). The impact of thermal environment on sleep quality and cognitive performance. Nature and Science of Sleep, 10, 153–165.

5. Haskell, E. H., et al. (2000). The effects of passive body heating on the temperature rhythms and sleep of men and women. Chronobiology International, 17(6), 797–811.