Several UK outlets report that a medical professional is advising people to avoid exercising during a specific four-hour period each day as temperatures soar, with forecasts and reports citing highs around 40C. The guidance targets people who regularly run, work out, or otherwise be active outdoors or in gyms during hot conditions.
The coverage frames the advice as a heat-safety measure, urging residents to take extra care when the risk from high temperatures is greatest. While the articles do not provide detailed medical study findings, they consistently present the message that exercising at the hottest time of day can increase health risks associated with extreme heat.
Both sources emphasize that the advice applies to a daily four-hour window, and both link the recommendation directly to the current period of extreme temperatures across the UK. Readers are urged to follow heat guidance and adjust activity plans accordingly during the hottest hours.