What is a common sign of dehydration in athletes?

Muscle cramps are a common sign of dehydration in athletes because dehydration can lead to an electrolyte imbalance and reduced blood flow, which can subsequently affect muscle function. When the body loses fluids and electrolytes through sweat, it can cause muscles to cramp or spasm due to a lack of adequate hydration to support normal muscle contractions and relaxation.

In contrast, increased energy levels and improved endurance are not typically associated with dehydration. In fact, dehydration tends to have the opposite effect by leading to fatigue and diminished performance. Similarly, enhanced concentration is often compromised in dehydrated individuals, as dehydration can impair cognitive functions and decrease focus. Therefore, recognizing muscle cramps as a sign of dehydration can help athletes take appropriate measures to rehydrate and prevent further complications during their activities.