How much water do you really need to drink...
We all know that we should be drinking enough water everyday, especially in this hot weather but...
How much is enough?
Is it eight glasses?
Is tap water alright, or is mineral water better?
Dr Michael Mosley explains how much water your body actually needs, and if you're drinking too much or too little... And dispels common myths along the way!
From the BBC's Earth Lab.
Just click on the 2 minute video below.
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