Simple hot water bottle hack can help you sleep in UK heatwave

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The country experienced its warmest night on record on Monday (July 18) when extreme heat caused temperatures to remain in the mid-20s.

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The highest recorded overnight temperatures were 24.5C in Aberporth, West Wales, 25.8C in Kenley in the London Borough of Croydon and 25.9C in Emley Moor near Huddersfield, West Yorkshire, according to the Met Office.

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The previous highest daily minimum record was 23.9 °C, recorded in Brighton on 3 August 1990.

If the heat is making it difficult for you to rest, there are a few cheap and easy tricks you can try to keep your bedroom cool – including using a hot water bottle.

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Filling a hot water bottle with cold water can keep you cool at night (Photo: Adobe)

Nowadays, a hot water bottle is traditionally used to keep you warm, but filling it with cold water can help cool you down.

Simply fill the bottle with ice cold water and place it in your bed. This will help lower your body temperature as you fall asleep, and your bed will feel nice and cool.

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Some people on TikTok have recommended filling the bottle with cold water and then sticking it in the freezer for a couple of hours to make sure it’s ice cold.

However, some manufacturers have found that frozen water could damage the material of many hot water bottles, meaning it could burst the next time hot water is added.

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If you put it in the freezer, make sure you only fill the bottle halfway and not to the brim, or just keep one bottle for cold use and the other for hot use separate.

How else can I stay cool at night?

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Swapping out your heavy duvet for a lower tog rating of between 1 and 1.45 or a light cotton sheet can help keep you cooler when trying to sleep at night.

Cotton pajamas are a good option for sleeping as they are lightweight and breathable, which should keep your body cool.

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A cool shower or bath in the evening can also help as it lowers your body temperature before bed. Research also shows that dipping your feet in cold water is a great way to lower core body temperature, so it’s worth a try before bed, too.

Make sure you keep your blinds closed during the day, especially in south-facing rooms, to keep the heat out, and close the doors to rooms you’re not in to keep the air cool.

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When temperatures drop in the evening, it can be worth opening the windows before bed to allow your home to cool down naturally.

If you have air conditioning, this is the quickest way to cool down any room. But if you don’t have one, you can try placing a bowl of ice in front of a fan to make a homemade cold fogger.

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Simply place a shallow bowl or pan of ice in front of a fan to create an ice-cold breeze that won’t break the bank.

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