As the highest daytime temperature in Seoul rises to 33 degrees and a ‘heat wave advisory’ is in effect throughout Seoul, concerns are growing about heat-related diseases such as heat exhaustion and heat stroke. In particular, children are more vulnerable to heat waves because their body temperature regulation function is not fully developed compared to adults. If you play or exercise outdoors for a long time in hot weather, your body temperature will rise quickly, which can lead to heat exhaustion or, in severe cases, heat stroke. According to the Korea Meteorological Administration on the 30th, a heat wave warning was in effect throughout Seoul as of 11 o'clock the previous day. This is the second time a heat wave warning has been issued in Seoul this summer, following the one on the 18th. This is the first time this year that a heat wave warning has been issued throughout Seoul. A heat wave warning is issued when the daily maximum perceived temperature of 33 degrees or higher is expected to last for more than two days. During this heat wave, you need to be careful of heat exhaustion (sunstroke) and heatstroke. Heat exhaustion refers to a condition in which the core body temperature rises to between 37 and 40 degrees Celsius due to exposure to a high temperature environment. Heatstroke occurs when the body temperature control center's ability to regulate body temperature is exceeded.