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With the UK currently basking in a well-deserved heatwave, many of us are having to dig out our fans or crank open a window to get some kip.
But Twitter users are swearing by a hot weather hack of a different kind: putting your bed sheets in the freezer.
Yes, really. Cool sheets, straight out of the freezer compartment.
The idea is to simply pop your sheets into airtight plastic freezer bag (after all, you don't want them lose in there, getting soaked and mucky!) and leave them in the freezer for a few minutes.
If your freezer compartment isn't big enough to store your full set of bedding, you can simply try the hack with your pillowcases instead.
While some sleep experts have called the tip "a myth", others seem to swear by it.
If your ac isn't working put your bed sheets in your fridge/freezer over the day, and have a peaceful sleep at night in this unbearable weather covered with cooling sheets. You're welcome.
- :sparkles: (@salmmawrites) May 21, 2020
One Twitter user who had tried the tactic wrote: "If your [air conditioning] isn't working, put your bed sheets in your fridge/freezer over the day, and have a peaceful sleep at night in this unbearable weather covered with cooling sheets. You're welcome."
Another shared a picture of her freshly laundered sheets stuffed into the freezer compartment, commenting: "Extreme heat... extreme measures. Clean sheets are in the freezer ready for a cooler night's sleep tonight."
"I just put my bed sheets in the freezer. You could say I'm winning at life right now," said another.
Extreme heat....extreme measures clean sheets are in the freezer ready for a cooler night's sleep tonight pic.twitter.com/yP01Grqhwb
- Hayley Garrod (@HayleyGarrod1) July 25, 2019
If you're constantly flipping over the pillow to find the cool side or cranking your electric fan to full blast, you may want to give this a try.
The freezer tip provides an alternative to the use of electric fans, which can come with problems.
While it feels lovely to have a cool blast of air on your body at night, fans also have the potential to move dust around the room and trigger allergies.
Mark Reddick, author at Sleep Advisor, said: "For some people, having a ceiling or floor fan in the room helps them fall asleep and stay cool during the night.
I just put my bed sheets in the freezer. You could say I'm winning at life right now.
- Steffy (@St_Louis31) June 20, 2017
"For others, it can keep them awake, trigger asthma attacks or dry out their eyes."
He added: "As a fan moves air around the room, it causes flurries of dust and pollen to make their way into your sinuses. If you're prone to allergies, asthma, and hay fever, this could stir up a whole lot of trouble."
To avoid the issue, make sure your fan is clean before use, wiping the blades free from any dust.
A constant stream of air also has the potential to dry out the skin and eyes overnight.
Mark advised that "lotions and moisturisers will help prevent this, but if your skin is excessively dry, use caution and monitor your skin to make sure you're not over drying it.
"Another thing to consider is that some people sleep with their eyes partially open. Again, a steady airstream will dry your eyes and may cause major irritation."
"If you wear contact lenses when you sleep, this is particularly problematic."
Meanwhile, the Sleep Foundation suggests "preventing the build-up of excessive heat in your sleep environment by using blinds to keep out sunlight and keeping the windows closed if the temperature outside is much hotter than inside."
At night time, if the temperature is less outside than inside, open your windows.
Wear "light bedclothes and light pyjamas" - or, in fact, no PJs at all - and consider taking a warm bath or shower. This sounds counter-intuitive, but it may help to regulate your core body temperature for longer.
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