How to stay hydrated

With the weather set to turn positively balmy over this Bank Holiday weekend, do you know how much to drink to stay hydrated when it’s hot? A lot more than most of us think, it turns out. A leading surgeon at Southampton General Hospital recommends that in a heatwave people ought to be downing three litres of water a day – yet he’s found hardly anyone drinks that amount. He says we need a ‘radical culture change’ towards drinking water in this country.

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