Feeling nauseous or experiencing vomiting after spending time in extreme heat might be more than just discomfort. It could be a sign of heat exhaustion. Heat exhaustion occurs when the body overheats due to prolonged exposure to high temperatures, often accompanied by dehydration and excessive sweating. Among its common symptoms are dizziness, fatigue, nausea, and, in some cases, vomiting. These signs indicate that the body is struggling to regulate its internal temperature. For same-day heat-related ...