Dehydration can be a serious concern during Ramadan, especially with long fasting hours. Watch for signs like excessive thirst, dry mouth, fatigue, dizziness, and dark-colored urine. You may also experience headaches or a lack of concentration. It's essential to hydrate adequately during non-fasting hours, particularly during iftar and before suhoor. If you notice severe symptoms, such as confusion or fainting, seek medical attention immediately. The NHS advises that staying hydrated is key to maintaining overall health, so be proactive and listen to your body during this holy month.