Water, water everywhere, but are we drinking enough drops?
Doctors generally agree that drinking an adequate amount of water should be encouraged. But too much of a good thing can lead to hyponatremia, the dangerous and potentially fatal dilution of the blood's sodium levels—caused by drinking too much water. This is particularly a risk for endurance athletes—runners, triathletes and bicyclists—involved in exertion exceeding 4 hours.
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Here are the "facts," all of which lack verifiable attribution, included in the ubiquitous "drink more water" e-mail:
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