The UK is experiencing its fourth heatwave of the year, with temperatures forecast to reach up to 35C in parts of the country. Experts have shared a simple technique to stay cool at night using an item found in every home: a damp sheet or towel.
Amber heat-health alert issued
The UK Health Security Agency (UKHSA) has issued an amber heat-health alert covering the East Midlands, East of England, South East and London. The alert runs from Tuesday to Thursday, with the agency warning that climbing temperatures may heighten health risks, particularly for vulnerable people. Temperatures are expected to peak on Wednesday, reaching as high as 35C across south-east England.
The Egyptian sleep method
To combat the sweltering nights, some are championing the so-called 'Egyptian sleep method'. This technique involves sleeping beneath a slightly damp sheet on hot nights, reducing body temperature through evaporation. Alex Dimitriu, a psychiatry and sleep medicine expert, explained: "The Egyptian sleep method involves sleeping under a damp sheet, which cools off from evaporation. Because water absorbs heat as it evaporates, your body temperature drops as the water gradually evaporates."
He noted that some variations suggest sleeping in minimal or no clothing, or wearing a damp T-shirt. For best results, ensure the bedroom is well-ventilated to avoid trapping excess humidity.
Other cooling tips
Lifestyle Homecare suggested: "Don't use frozen pads etc, instead pop some damp towels into the fridge to cool. Once they are suitably cold, lay them out inside a bin bag, cover them with a blanket and use them as a makeshift cooling mat." RBC noted that hanging a damp towel near an open window can also cool a room if there is adequate airflow: "As air passes through the damp fabric, some of the water evaporates, absorbing heat from the air. The trick is also effective when used with a fan that blows air through the towel."
