I just read an article on HowStuffWorks and it is very interesting. Here is a quote from the article:
Let’s figure out exactly what you’re burning when you drink a 16-ounce (0.5 liter) glass of ice water:
- The temperature of ice water can be estimated at zero degrees Celsius.
- Body temperature can be estimated at 37 degrees Celsius.
- It takes 1 calorie to raise 1 gram of water 1 degree Celsius.
- There are 473.18 grams in 16 fluid ounces of water.
So in the case of a 16-ounce glass of ice water, your body must raise the temperature of 473.18 grams of water from zero to 37 degrees C. In doing so, your body burns 17,508 calories. But that’s calories with a little “c.” Your body only burns 17.5 Calories, and in the grand scheme of a 2,000-Calorie diet, that 17.5 isn’t very significant.
Basically, because the ice water is so cold, your body has to burn calories to heat it back up. This is probably true with any ice cold drink, but water has no additional calories. So if you’re on a diet, drink more ice cold water!
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