It’s no secret that it’s good to keep well-hydrated; the health benefits of drinking at least 1.5 -2 litres (half a gallon)of water daily, particularly in hot and dry conditions, are well documented.
Taking a bottle of water out and about with us is highly recommended to keep up our fluid intake.

But what if the bottled water itself has been exposed to hot and dry conditions?

Americans can take a warning from a University of Florida study of bottled water in China ─ don’t drink the liquid if you’ve left it somewhere warm for a long time.
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