Which of the following is a symptom of heat exhaustion?

Heavy sweating is a key symptom of heat exhaustion. This condition occurs when the body loses an excessive amount of water and electrolytes through sweat in hot environments or during intense physical activity. As the body struggles to cool itself down, heavy sweating is a critical sign that the body's temperature regulation is being challenged.

Properly identifying heavy sweating as a symptom is crucial for recognizing heat exhaustion early, as it can progress to heat stroke if not addressed. Recognizing this symptom allows for timely intervention, such as moving the person to a cooler environment, rehydrating, and seeking medical attention if necessary.

The other symptoms provided, such as cold chills, intense hunger, and rapid weight gain, do not correlate with heat exhaustion. Cold chills might suggest a different health issue like hypothermia or infection, while intense hunger and rapid weight gain are not typically associated with heat-related illnesses. Understanding these differences is important for effective first aid and response to potential heat-related conditions.