💧Hydration Level Calculator
Daily water intake recommendations vary by body weight, activity level, climate, and diet. The widely cited "8 glasses a day" is not evidence-based; individualised calculation is more accurate. About 20% of water intake comes from food.
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Fun Fact
The "8×8" (eight 8-ounce glasses) rule was traced to a 1945 US Food and Nutrition Board recommendation — but the original text noted that most of this water comes from food.
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