The UK is experiencing its fourth heatwave of the year, with temperatures anticipated to rise into the mid-30s Celsius. This period of intense heat is expected to reach its highest point on Wednesday.
Experts have offered advice on how to exercise safely in the hot conditions. David Exell, who previously held a record for running the Marathon Des Sables, emphasised the importance of staying hydrated. He also suggested starting exercise early in the morning and seeking shade when possible.
Jonathan Robinson, an Applied Sport Scientist at the University of Bath, reiterated that hydration is crucial. He explained that dehydration can lead to reduced concentration, lower energy levels, and restricted physical performance, and in extreme cases, heat illness and kidney damage. Robinson noted that skimmed milk and orange juice can also contribute to hydration, not just water.
Age UK has highlighted that high temperatures and humidity pose a health risk, particularly for older individuals. The charity recommends cooling down with water on the back of the neck and being aware of dehydration symptoms. They also advise looking out for signs of heat exhaustion, which include headaches, dizziness, nausea, and a fast pulse. If feeling unwell, individuals should lie down in a cool room, drink fluids, and cool themselves with water, contacting a pharmacist or 111 for advice if needed. Untreated heat exhaustion can progress to heatstroke, which is a dangerous rise in core body temperature that can cause confusion, loss of consciousness, or seizures.