Did the headline shock you? Well you read it right drinking water just when you are thirsty is not a good idea. Remember when you drink lots of water at one go to quench your thirst it is a sign that your body had been craving water for a long time. Being thirsty is a subtle sign of dehydration. So consciously prepare yourself to drink water often throughout the day to save yourself from signs of dehydration and keep fit. Here are 10 healthy risks for dehydration that you should know about. Why do you need to drink water often?