If you’re thirsty, you’re already mildly dehydrated, and that can cause symptoms like headache, fatigue, dizziness and more. It can also contribute to heatstroke. This is why you should drink water even when you are not thirsty. Also, keeping yourself hydrated helps regulate body temperature, removes waste through kidney and prevents kidney stones, lubricates joints, aids in digestion, keeps skin bright and supple and helps improve mood and cognitive functions.
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