Common symptoms of dehydration include thirst, dry mouth, fatigue, and reduced urine output. Other notable signs are dark yellow urine, dizziness, and confusion. Severe dehydration can lead to more serious issues, such as rapid heartbeat, sunken eyes, and fainting. It's crucial to recognize and address these symptoms early to prevent complications. Staying hydrated is especially important during physical activity or hot weather when fluid loss through sweat is increased. Regularly consuming water and electrolyte-rich drinks can help mitigate the risks associated with dehydration, which is vital for maintaining overall health.