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Let thirst be your guide when it comes to hydration, sports drinks
Let thirst be your guide when it comes to hydration, sports drinks

There was a time when people drank because they were thirsty. People in desk jobs didn't give hydration much thought beyond refilling their coffee mugs. Throughout most of the 20th century, marathon runners were discouraged from drinking during exercise for fear it would slow them down, writes Dr. Timothy Noakes, professor of exercise science at the University of Cape Town and author of "Waterlogged." Noakes notes that those athletes did just fine. It was only during the mid-1970s, after the widespread appearance of the first sports drink — Gatorade, named for the University of Florida football team — that the pendulum swung. A recent investigation by BMJ...

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