What sign may indicate that an individual is becoming dehydrated during physical activity?

Prepare for the CSEP Certified Personal Trainer Test. Utilize flashcards and multiple-choice questions, all with hints and comprehensive explanations. Get fully ready for your certification exam!

Dark yellow urine or decreased urine output is a clear indicator of dehydration during physical activity. When the body is adequately hydrated, urine tends to be light yellow or clear, indicating proper fluid balance. However, when a person is dehydrated, the body conserves water, leading to a concentration of waste products in the urine. This results in a darker color. Additionally, decreased urine output signifies that the body is trying to retain fluids, which is another sign of dehydration.

The other choices reflect conditions that do not indicate dehydration. Clear urine suggests good hydration, while feeling energized during exercise might indicate sufficient hydration or fitness level, and increased appetite might not necessarily correlate with hydration status. Thus, dark yellow urine or reduced urine volume serves as a reliable sign for identifying dehydration during physical exertion.

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