High humidity makes the situation worse by preventing sweat from evaporating properly. Since sweating is the body’s natural cooling mechanism, reduced evaporation causes body temperature to rise more quickly, increasing the risk of overheating. “Long hours of travel, morning assemblies, outdoor activities and inadequate hydration can lead to dehydration, heat exhaustion, headaches, poor concentration and, in severe cases, heat stroke if early warning signs are ignored,” he said.
