What is a sign of heat exhaustion?

Weakness and fatigue are key signs of heat exhaustion. This condition occurs when the body loses an excessive amount of water and salt, primarily through sweating, leading to symptoms such as weakness, extreme fatigue, and a feeling of being overheated. Although high body temperature, severe headache, and muscle spasms can also occur in heat-related illnesses, they are generally more indicative of heat stroke or other conditions rather than the primary symptoms of heat exhaustion. Recognizing weakness and fatigue is crucial for early intervention, as prompt action can help prevent the condition from progressing to heat stroke, which is more severe and life-threatening.