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A 49-year-old member asked:

what can happen if you exercise without replacing your sweat by drinking water or other fluids?

1 doctor answer2 doctors weighed in
Dr. Stephen Southard
Internal Medicine 15 years experience
Dehydration: You could become water and electrolyte deficient. Symptoms that can accompany this are decreased exercise performances, muscle cramps, fatigue, dizziness/lightheadedness. If it really gets out of hand, like if you were to run a marathon and not drink at all, you could have much more severe symptoms even a seizure.

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Last updated Apr 11, 2015

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