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Do you really need 8 glasses of water a day? An exercise scientist explains why your kidneys say 'no'

  • Written by Tamara Hew-Butler, Associate Professor of Exercise and Sports Science, Wayne State University
Do you really need 8 glasses of water a day? An exercise scientist explains why your kidneys say 'no'Exercising can increase your need to drink water, but there's no need to overdo it. The Great Brigade/Getty Images

The warmer weather and longer days have inspired reminders to “stay hydrated” and drink eight glasses of water – or about two liters – a day.

Not to burst anyone’s water bottle, but healthy people can...

Read more: Do you really need 8 glasses of water a day? An exercise scientist explains why your kidneys say...

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