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Hydration and Exercise: How to Get It Right

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Know the risks of dehydration

Any number of problems can result from not drinking enough water; perhaps one of the most common is fatigue.

If you don’t drink enough water then “your blood gets thicker from lower water content and your heart has to work harder, which means you get tired,” says Clark. “A dehydrated person will get fatigued.”

Next: Drink before and during exercise