1 mL (or gram) of water heated 1 degree C is one calorie. 1000 calories = 1 "dietary" Calorie (or Kcal). So, 1 L of water heated 1 degree is 1 Calorie.
Body tempurature is 37 C. Cold water is about 4 C. That's 33 degrees.
Drinking 1 Litre of water thus costs you 33 Calories, unless you where already overheating at the time.
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Last edited by JHVH : 10-29-4004 BC at 09:00 PM. Reason: Time for a rest.
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