I don't think the answer is as straight forward as it seems. Doing hard physical labour outside in the tropics can result in large fluid loss through excessive sweating. In such cases it is not too unusual to consume 5 - 6 litres of water per day, simply to replace lost fluids. Under these conditions, fluid loss can be so great that you need to drink water before you are thirsty to avoid dehydration.
On the other hand, you would not require this much sitting in an air-conditioned office. Generally, your body will tell you how much you need to drink.
Last edited by Shalimar
on Sat Aug 29, 2009 9:45 pm, edited 1 time in total.
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