You shouldn’t sleep with a fan on during the heatwave, experts warn
The UK is in the middle of a heatwave which is sending temperatures soaring into the 30s.
It's been so hot the Met Office has issued its first ever extreme heat warning.
Met Office Chief Operational Meteorologist Steven Ramsdale said: "The high temperatures are going to continue through a large part of this week.
"There’s a continuing risk of isolated thundery downpours late in the afternoons but most areas will stay dry until later in the week."
Public Health England is also urging people to stay safe and drink plenty of fluids.
But while it's important to try to keep yourself cool, Brits are being warned to stay away from a device many will be relying on in the heat.
With temperatures reaching 32C in some parts of the country, many people will be struggling to get to sleep.
Some people will no doubt be switching on their fans at full blast while they sleep.
However, some experts believe sleeping with a fan on can be damaging to your health.
On its website, The Sleep Advisor says sleeping with a fan on may end up circulating pollen and dust.
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This can be dangerous to those who suffer from allergies and asthma, as it could trigger an attack.
The Sleep Advisor says: "Take a close look at your fan. If it’s been collecting dust on the blades, those particles are flying through the air every time you turn it on."
Constantly blasting cool air around the room can also cause dry skin and dry eyes.
Lotions and moisturisers could help prevent this, but if your skin is very dry you should be careful.
Some people sleep with their eyes partially open, and a steady airstream can cause major irritation.
For those who can’t help but sleep with their mouths open, this is the same.
The excess airflow can dry out mouths and throats.
Another downside of sleeping with a fan on is that it can dry out your nasal passages, which can affect your sinuses.
The dryness can result in your body producing excess mucous to compensate.
This in turn can lead to a blocked and stuffy nose and sinus headaches.
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The NHS recommends keeping rooms cool by “using shades or reflective material outside the windows.
“If this is not possible, use light-coloured curtains and keep them closed (metallic blinds and dark curtains can make the room hotter).”
If you can, try to move into a cooler room for sleeping.
It’s important to keep hydrated throughout the day – drink plenty of fluids and avoid excess alcohol.
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