It's always been a common question that how much water one should drinks in a day ? Is the requirement is similar for every one?
No one can tell you exactly how much water you need to drink and it varies from person to person. Important is
1.you must drink water when your body gives a signal for thirst.
2. During high heat and exercise make sure to compensate for the lost fluid.
3. As an assumption one should drink atleast a litre of water per 20 kg body wt.