Why you should NEVER sleep with a fan on overnight during the heatwave: Experts reveal air blowing can trigger allergy and asthma attacks 


  • According to reports, leaving electric fans on overnight can be injurious to health.
  • Fans can collect dust on the blades, which means they circulate dust, pollen and wind
  • Dry up nasal passages, resulting in excess mucus production and blocked sinuses

With much of England set to go as high as 90F today, many may be turning to their electric fans in a desperate bid to cool off at bedtime.

But while fans are an ideal way to stay cool for a short period of time, leaving them on all night can have many negative effects on your health. sleep advisory report.

And that’s not good news for people who suffer from allergies or asthma because shutting down with a fan can spread not only the air — but pollen and dust as well.

Sleep Advisor Says: ‘Look closely at your fan. If it’s collecting dust on the blade, those particles are flying through the air every time you turn it on.’

According to a report by Sleep Advisor, keeping electric fans on overnight can have many negative effects on your health. picture, stock image

Leaving the fan on all night can also have bad consequences for your skin – feeling and looking dry.

The constant flow of air can have a similar effect on your eyes and mouth – especially those that sleep with them partially open.

Sleep Advisor also warns that cold air can leave you feeling stiff in the morning—especially those who fan their neck and face.

“This is because the concentrated cold air can make the muscles tense and cramped,” explained the experts.

Britain is set to face another grueling day with extreme weather warnings for 90F temperatures today after thunderstorms swept across the country and brought two inches of rain to the hottest day of the year so far.

The Met Office says the mercury could push past 86F in southern England and 77F in Belfast, with temperatures forecast to remain cooler in the east.

People enjoy the weather at Bournemouth beach in Dorset tomorrow on the hottest day of the year so far

People enjoy the weather at Bournemouth beach in Dorset tomorrow on the hottest day of the year so far

Sun-seekers are warned to beware of sunburn, heat exhaustion, dehydration, nausea, fatigue ‘and other heat-related ailments’.

It comes as England on Tuesday reached its hottest temperature of the year – 89.96F – recorded at West London’s Heathrow Airport.

The previous high for the year was 88.88F, also recorded at Heathrow on Sunday.

Amber remains an extreme heat warning for central and southern England, Wales and Northern Ireland.

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