Why is water so important?

In order to be health you need to drink at least 2 l of water per day. This app will help you to remember how much water you drunk and how much water you should drink. After every glass of water you drunk you should click 'add'. History of the water consumption from every day (click table icon below 'clear' option) should help you to change your habit if you DON'T DRINK AT LEAST 8 GLASSES OF WATER per day.