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London weather: Experts reveal the chilling reason you should not sleep with a fan on during the heatwave

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As London has broiled in temperatures of 30C plus, it’s been easy to turn to portable fans for some light relief.

However, relying on the cool air they provide during the night time could be doing us more harm than good.

According to experts in the field, keeping a fan running while you sleep may have several cons that could affect your health.

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Even the evenings are really warm across the capital (Mirrorpix)

Using the electric cooler in the bedroom will not only circulate air but also pollen and dust too, which isn’t ideal for those suffering from allergies or asthma, the Mirror reports.

Your skin may also suffer from the fan being on all night as it can dry it out.

If this wasn’t enough, it also has the potential to dry up your nasal passages, resulting in your body producing excess mucus and you waking feeling all blocked up.

“This is because the concentrated cool air can make muscles tense up and cramp,” a spokesperson for consumer website Sleep Advisor said, adding this happens most often to those who sleep with the fan right next to their neck and face.

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“Take a close look at your fan,” they said.

“If it’s been collecting dust on the blades, those particles are flying through the air every time you turn it on.”

Even though the country feels unseasonably hot, it seems like there are a few good reasons to avoid using a fan all night.

However, the hot spell might not continue and there are signs the wave is subsiding.

From Wednesday (July 21) to Friday (July 23), The Met Office said it is likely to be dry and hot with highs of 28C, 26C and 23C respectively.

But by the weekend this hot, stuffy heat will give way to thunderous skies and rain showers – which might come as a relief to sweltering Londoners.

The temperature will dip down to 23C on Saturday (July 24), falling again to 22C on Sunday (July 25).

By the beginning of next week, Monday is forecast to have light rain showers and a gentle breeze, but with more settled weather than the thunderstorms that came the weekend before.

Fortunately, the rest of the following week looks set to be more dry and warm, with sunny skies and gentle breeze.

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https://www.mylondon.news/news/uk-world-news/london-weather-experts-reveal-chilling-21103533