Which of the following is NOT a sign of dehydration during exercise?

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In the context of exercise physiology and hydration, increased energy is not a sign of dehydration. When individuals are dehydrated, the body’s ability to perform effectively decreases, often leading to sensations of fatigue and diminished performance. Thirst, dry mouth, and fatigue are all clear signs of fluid deficit, signaling that the body is in need of hydration to maintain optimal function.

Thirst is one of the earliest indicators that the body requires more fluids, serving as a biological signal to prompt drinking. Dry mouth occurs when saliva production decreases due to insufficient water, a common symptom of dehydration. Fatigue is a significant marker as well; as dehydration progresses, physical and mental fatigue can set in, exacerbating the decline in performance during exercise. Therefore, increased energy would be misleading and contrary to what is expected in a dehydrated state.

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