What is a common treatment for exertional heat illnesses?

Replacing fluids and electrolytes is a critical treatment for exertional heat illnesses. When individuals exert themselves physically, particularly in hot conditions, they lose fluids and essential electrolytes through sweat. This loss can lead to dehydration and an imbalance in the body's electrolyte levels, which can exacerbate the symptoms of heat-related illnesses such as heat exhaustion or heat stroke.

By rehydrating and restoring electrolytes, the body can better regulate its temperature and maintain physiological functions. This treatment is essential because it not only addresses the immediate effects of heat exhaustion but also helps prevent further complications that could arise from prolonged dehydration or heat stress.

In contrast, immediate physical conditioning or increased physical activity would likely worsen the condition, as the body is already in a state of stress due to heat. Completely avoiding water would be detrimental, as hydration is vital for recovery. Therefore, focusing on replenishing fluids and electrolytes is the most effective and appropriate response for managing exertional heat illnesses.