Britain is bracing for another scorching heatwave next week, with predictions of 41°C potentially exceeding the existing record of 40.3°C established in July 2022. In such extreme heat, maintaining a comfortable temperature can seem nearly impossible, but research suggests a straightforward method to reduce core temperature without relying on a fan or spending money.
Military-Approved Cooling Technique
According to a 2012 study published in the Journal of Military and Veterans' Health by exercise physiologist and researcher Matt Brearly, there is an uncomplicated technique to rapidly cool down and prevent heat exhaustion—simply by consuming slushies. These are not the sugar-laden varieties, though. The research discovered that drinking equal quantities of crushed ice and water can reduce core body temperature in sweltering conditions. This occurs because crushed ice absorbs considerably more heat as it melts within the body and extracts warmth before the water reaches body temperature.
How It Works
While the study advocates its application by the armed forces, it can prove equally beneficial for individuals attempting to stay cool during soaring temperatures. If you are working outdoors or planning to exercise, consuming an ice slushy beforehand or during intervals can decrease core temperature by between 0.3 and 1.1°C. It functions because ice demands a substantial amount of energy to melt—and that warmth originates from the body. Crushed ice absorbs approximately three times as much heat as an equivalent volume of cold water.
Practical Application
To employ this technique, the research suggests consuming approximately five to seven grams of crushed ice per kilogram of body weight. It should be taken gradually, roughly half an hour before physical activity or venturing outdoors. Nevertheless, while this can lower temperature, it is crucial to understand that it does not substitute drinking water. During warm weather, it remains essential to keep drinking water throughout the day to replenish fluids lost through perspiration.
