As the UK swelters through a Bank Holiday heatwave with temperatures expected to reach 35C, sleep experts are urging Brits to avoid sleeping with a fan on, despite the temptation for relief. The Met Office forecasts that Monday and Tuesday could be the hottest May days on record, surpassing the previous high of 32.8C, with 18 English counties seeing 34C or more.
Health Risks of Sleeping with a Fan
Dr. Kiran Dintyala, speaking to Sleep Advisor, warned that fans circulate dust and pollen, triggering severe reactions in allergy and asthma sufferers. The constant airflow dries out the room, leading to dehydration, dry eyes, sinus infections, bronchitis, and nosebleeds. Sleeping with an open mouth can result in a sore throat due to dry air, while prolonged exposure to cool air may cause stiff, aching muscles.
Martin Seeley, CEO of Mattress Next Day and a sleep expert, agreed that fans should be left off overnight. He noted that dusty fan blades can cause itchy eyes, runny nose, sneezing, and breathing difficulties. The dry air also parches nasal passages, prompting excess mucus production and leading to congestion, head pressure, and sinus headaches. Staying hydrated is crucial, as even mild dehydration can worsen daytime fatigue.
Pre-existing Muscle Pain
Seeley added that those with pre-existing muscle pains from exercise or poor desk posture should avoid directing the fan on affected areas overnight, as it can exacerbate discomfort.
Heatwave Forecast
The Met Office predicts temperatures will remain at 28C or above until at least Thursday. An official heatwave is declared when temperatures hit thresholds between 25C and 28C for three consecutive days. Looking ahead to June, the forecast from May 28 to June 6 indicates continued fine weather with high pressure, though some showers and thunderstorms may occur in the west. Temperatures will stay warm or very warm inland, cooler near the coast.
Experts recommend alternative cooling methods, such as using a damp cloth, taking cool showers, or keeping curtains closed during the day, to stay comfortable without the health risks associated with fans.
