LifestyleHealthHeatwaveThis hack can lower core body temperature in minutes — and it's completely free12:07, 01 Jul 2026Updated 07:19, 03 Jul 2026With the UK set to swelter under another heatwave next week, trying to stay cool is top of a lot of people’s minds.‌The UK may see record-breaking temperatures next Tuesday, with forecasts of 41C that could surpass the current high of 40.3C set in July 2022.‌In this kind of heat, staying cool can feel almost impossible - but one study says there is an easy way to lower your core temperature without using a fan or spending any money.‌According to a 2012 study in the Journal of Military and Veterans’ Health by exercise physiologist and researcher Matt Brearly, there is a simple way to quickly cool down and stop heat exhaustion - just by eating slushies.These aren’t the sugar-filled slushies, though - the research found that drinking equal parts of crushed ice and water can lower your core body temperature in hot conditions.‌This is because crushed ice absorbs much more heat as it melts inside your body and removes heat before the water reaches body temperature.Although the study recommends its use by the military, it can be just as effective for people trying to stay cool amid rising temperatures.If you work outside or want to exercise, drinking an ice slushy before heading out or on breaks can lower your core temperature between 0.3 and 1.1 C.‌It works because ice requires a large amount of energy to melt - and that heat comes from your body.Crushed ice absorbs about three times as much heat as the same amount of cold water.Article continues belowTo use this method, the study recommends that around five to seven grams of crushed ice be consumed per kilogram of body weight. You should consume it slowly, around half an hour before exercise, or heading outside.However, although this can cool you down, it’s important to note that it does not replace drinking water.In hot weather, it’s very important to continue to drink water throughout the day to replace the fluids lost from sweat.Choose Daily Mirror as a 'Preferred Source' on Google News for quick access to the news you value.‌HeatwaveFitnessFitness And HealthHealth