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Why drinking too much water can be dangerous during long races
Original Title
Hyponatremia in distance runners: fluid and sodium balance during exercise.
doi:10.1249/00149619-200208000-000031%
Lower Quality
Methodology score · 1/100
Narrative Review
Fit Body Science breakdown
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What’s the bottom line?
When runners drink too much water during long races, their blood gets too diluted, which can make them very sick. Losing salt during running doesn't cause this problem unless they also drink too much.
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