International Sports Sciences Association (ISSA) Trainer Practice Exam

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What is a sign of adequate hydration?

  1. Dark urine

  2. Clear urine

  3. Frequent headaches

  4. Dry skin

The correct answer is: Clear urine

Clear urine is an indication of adequate hydration because it typically reflects a well-hydrated state. When the body is properly hydrated, urine becomes less concentrated, leading to a lighter color. This transparency is a visual indicator that the kidneys are filtering out excess water, which indicates that the body's fluid levels are sufficient. On the other hand, darker urine usually signals dehydration, as it indicates that the body is retaining more water, causing the urine to be more concentrated. Frequent headaches and dry skin can also be symptoms of dehydration; they are not positive signs of hydration status but rather indicators that the body may need more fluids.

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