What are early signs of dehydration that lifeguards should watch for?

The early signs of dehydration that lifeguards should monitor include symptoms such as increased thirst, a dry mouth, reduced urination, and fatigue. These symptoms are indicative of the body’s need for fluids and are among the first physiological responses to a deficit in hydration.

Increased thirst occurs as the body signals that it requires more water, and a dry mouth is a direct consequence of insufficient saliva production due to the lack of fluids. Reduced urination often signifies that the kidneys are conserving water in response to dehydration, while fatigue reflects the overall impact of dehydration on energy levels and physical performance.

Recognizing these early signs is critical for lifeguards, as they need to act promptly to prevent further dehydration, which can lead to more severe health issues for individuals in their care, particularly those engaged in physical activity or exposure to heat.