What is an important step to take when someone shows signs of heat exhaustion?

When someone shows signs of heat exhaustion, it is crucial to move them to a well-ventilated area and provide hydration for several reasons. Heat exhaustion can occur when the body loses too much water and salt, often due to excessive sweating during hot weather or intense physical activity. Therefore, reducing heat exposure is vital for cooling the body.

Moving to a well-ventilated area helps lower body temperature by allowing heat to dissipate more easily. Additionally, offering fluids, preferably water or electrolyte-replenishing drinks, helps to rehydrate and restore the body's balance of fluids and electrolytes, which is essential for recovery.

Encouraging someone to lie down in a shady area is beneficial, but it is not as comprehensive as providing hydration and ventilation. Caffeinated beverages can worsen dehydration and are not advisable in this scenario. Continuing physical exertion would exacerbate the condition and increase the risk of progression to heat stroke, a much more severe and life-threatening condition.