A common symptom of dehydration that individuals should watch for is increased thirst. Other early signs include dry mouth, reduced urine output, and darker-colored urine. As dehydration progresses, individuals may experience fatigue, dizziness, and confusion, all of which can significantly impact physical and mental performance. Staying adequately hydrated is crucial for overall health, particularly in individuals engaged in regular physical activity or living in hot climates. Monitoring hydration status and responding to thirst cues can help maintain optimal health and performance levels.