Why you should be sleeping nude

Here in Australia, our night time temperatures can vary vastly from winter to summer and state to state. Yet, how can the careful scrutinisation of our sleeping temperature — so often overlooked — aid us towards a blissful night’s rest?

Temperature regulation and sleep.
The optimal temperature for inducing and maintaining sleep differs by sex1. During certain testing, men —when clothed and in an environment with a relatively sedate 50% humidity— reported better sleep quality at 17 degrees Celsius (63 degrees Fahrenheit.) Whilst women preferred something noticeably warmer with around 23 degrees Celsius (73 degrees Fahrenheit).

Interesting results no less. The ideal ambient temperature2 for sleeping adult is anywhere between 17 and 28 degrees Celsius (63 to 82 degrees Fahrenheit) depending on humidity and airflow, the amount of insulation provided by clothing and/or bedding, and body temperature.

Does your bedroom sit within these parameters year-round?

When we sleep, the release of melatonin is a key player responsible for our core body temperature declining. At the same time, our body experiences a cessation of physical activity and naturally a drop in metabolic rate.  Thermosensitive cells in the preoptic and anterior hypothalamic regions of the brain receive these signals and initiate the onset of sleep. Simply put, when you cool down, your body instinctively knows it’s time to rest.

Sleep can be somewhat testing to induce and therefore maintain unless our core temperature is kept within what is known as the thermoneutral zone3. Being in this state requires neither heat production by shivering nor cooling effects of sweating. This is the optimum temperature at which heat production and heat dissipation from the skin surface is in perfect balance. For some individuals staying in this perfect balance can be tricky, with poor home insulation, and the unfortunate lack of heating/cooling systems.

Needless to say, being too hot or too cold dramatically increases the likelihood of waking up during the night — leading to sub-quality sleep. Perhaps the most problematic is overheating. Being too hot has been proven to alter a person’s sleep architecture, this being the important latency and length of the various sleep phases. These phases are defined by a host of differing brain patterns and altering muscle tone. Because of their high importance, the potential for physiological consequences is increased when our brain skips or irregularly cycles through these phases.

When a person is overly hot whilst sleeping, the brain is encouraged into a more prolonged stage four of sleep4. Stage four is defined by extremely slow delta waves within the brain and causes the amount of REM sleep (Rapid Eye Movement) to decrease. This isn’t great news, as REM sleep has a strong correlation with emotional regulation and memory forming.

Sleeping naked.

Whilst a blanket can be very easily discarded in the middle of the night, clothing presents a whole different scenario. Sleepwear can so effortlessly cause overheating, therefore sweat production and, in turn, discomfort when this unwarranted moisture attaches itself to clothing and your bedsheets.

However, being exposed to the cold will not affect the latency nor the length of the various sleep phases, meaning sleeping in the buff is far less risky than getting yourself snug in those beloved pyjamas you received last Christmas from Aunt Doris.

Your ambient temperature is the makeup of humidity, airflow, and the amount of insulation provided by bedding/clothing — and how these factors then interact with your body temperature. Sleeping in the nude simplifies this equation and vastly improves your chance of restful sleep.

Hyber Nation weighted blankets will assist you in reaching the optimum temperature our bodies need to attain a deep and rewarding sleep — and maintain it. Our organically sourced and sustainably woven fabrics are handmade from Global Organic Textile Standard (GOTS) certified cotton.

As well as incredible quality, by being GOTS certified we know the cotton is grown in a environment free from pesticides, herbicides, and other undesirable influences.

With, or without clothes, The Rested weighted blanket is on your side when it comes to temperature control.




  1. https://journals.sagepub.com/doi/10.1177/1420326X11425967
  2. https://www.sciencedirect.com/science/article/abs/pii/S0360132318300325?via%3Dihub
  3. https://www.tandfonline.com/doi/full/10.4161/temp.29702
  4. https://www.sciencedirect.com/science/article/abs/pii/S0360132318300325?via%3Dihub