How does hydration relate to first aid for heat-related illnesses?

Hydration plays a crucial role in first aid for heat-related illnesses, particularly in preventing overheating. When the body is exposed to high temperatures, it loses water through perspiration as a natural mechanism to cool down. Maintaining proper hydration helps regulate body temperature, allowing physiological processes to function effectively. When individuals are well-hydrated, their bodies can better cope with heat stress, reducing the risk of conditions such as heat exhaustion or heat stroke.

If the body becomes dehydrated, it struggles to cool itself, which can lead to a dangerous rise in core temperature. This is why encouraging adequate fluid intake is an essential step in first aid for anyone displaying symptoms of heat-related illnesses. Staying hydrated is a proactive measure that can prevent overheating and its associated dangers.