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Climbers rescued off Margarine Ridge, Mt Hay 8-Nov-2011 At 12:56:24 PM Andrew_M

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On 8/11/2011 tnd wrote:
>On 8/11/2011 becad wrote:
>>Water is fine if you have food with sugar and salt in it too
>>
>With respect, that's bollocks for a situation like MR on a hot day...

True. But for something like MR then really NO salt is needed. Salt replacement during exercise is really only for serious hyponatremia. Drinking 6 or 7 liters of water in a climbing day ain't going to give you that.

>
>The sugar is irrelevant anyway apart from a bit of energy it provides,
>it's added to electrolyte mixes to make the salts palatable. It's the latter
>that enable correct hydration.

False. Sugar, in the correct concentration and ratio to salt, is absolutely essential for the intestinal glucose-sodium cotransporter to function (the reason why oral rehydration therapy works).