As Korea logged its highest temperature on record, with Yangsan in South Gyeongsang Province reaching 42.5 degrees Celsius, the World Health Organization (WHO) has issued guidance to help reduce health risks during extreme heat. According to WHO on Saturday (local time), its recommendations fall into four main categories: avoiding the heat, keeping homes cool, staying cool and hydrated and protecting infants and children. To avoid heat-related illness, WHO advises people to stay indoors whenever possible. If going outside is unavoidable, remain in the shade as much as possible. Temperatures in areas direct sunlight can be 10 to 15 degrees higher than in shaded areas. Spending two to three hours a day in a cool place and regularly checking heat wave alerts are also recommended. Keeping homes cool is another key measure. During the day, blinds or curtains should be used to block direct sunlight, while windows should be opened at night once outdoor temperatures have dropped. WHO also recommends using electric fans only when the air temperature is below 40 degrees. At temperatures above 40 d