Eight glasses of water a day; that’s the rule. At least that is what we’ve always been told.
Health experts have long touted eight as the magic number, but the question of how much water we really need to consume isn’t that simple.
A 100kg man who exercises a lot is quite different to a 60kg woman who works at a desk all day and that’s just one example of the many different variables that affect the glasses of water per day rule.