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Message: <blockquote data-quote="Pbartender" data-source="post: 2180855" data-attributes="member: 7533">Woah, woah, woah there...  You, sir, are very badly mistaken.SCIENCE! To the rescue!One calorie is, by definition, "the amount of heat required at a pressure of one atmosphere to raise the temperature of one gram of water one degree Celsius".That means, it takes 1000 calories to raise the temperature of 1 liter of water by one degree celsius.  For ice-cold water (0ºC), that means about 37000 calories to raise that entire liter of water up to body temperature.Unfortunately, the units on food labels are listed in Calories (with a captial 'C'), each of which is equal to 1000 ordinary calories (with a lower case 'c').So, each liter of ice-cold water you drink 'burns' only 37 calories as your body warms it up.  That's roughly equivalent to the calories in half a slice of bread, a 'pat' of butter, or your average peach.Or to put it another way, you'd burn the same number of Calories from drinking 1 liter of ice-cold water, as you would by playing cards for 20 minutes, or walking (at a leisurely 2 mph) for 10 minutes.Drinking extra cold beverages will not appreciably help you lose weight.</blockquote>