Which of the following are signs of dehydration?

Thirst and confusion are indeed signs of dehydration. When the body loses more fluids than it takes in, it begins to experience various symptoms due to the lack of adequate hydration. Thirst is one of the first signals that the body sends, indicating that it requires more fluids. As dehydration progresses, it can lead to confusion, as the brain is highly sensitive to changes in hydration levels. Electrolyte imbalances and reduced blood volume can affect cognitive functions, contributing to disorientation or confusion.

Recognizing these signs is crucial, especially in a lifeguarding context, as dehydration can exacerbate the risk of heat-related illnesses and impair physical performance and decision-making abilities. Staying vigilant for signs like these allows lifeguards to take appropriate action to rehydrate individuals before more serious health issues arise.