Here we go. I just checked the original post of the information. To raise water from ice to body temperature (about 32 degrees F to 98.6 degrees F) is about 66 degrees F, or roughly 37 degrees Celsius.
A half-gallon of water (8 8-oz glasses) is about a half-gallon. We'll say a gallon is 4 liters (roughly four quarts, which is what a gallon actually is) to make the math easier in a minute. A standard calorie is the heat to raise one cc of water by one degree C. A liter is 1000 ccs.
So 2 liters of water (half a 4-liter 'gallon') is 2000 ccs of water. 2000 ccs of water raised by 37 degrees C is 2000 * 37 standard calories, or 74,000 calories. A dietary calorie is a kilocalorie, or 1000 calories. So you burn 74 calories by drinking a half-gallon of water at 32.5 degrees Fahrenheit (and that's uncomfortably cold, at least for me).
The original assertion was that that was equal to the calories burned in jogging a mile. That's off, but not, like, an order of magnitude off.
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
timeasmymeasure
no subject
Date: 2003-10-15 06:43 pm (UTC)A half-gallon of water (8 8-oz glasses) is about a half-gallon. We'll say a gallon is 4 liters (roughly four quarts, which is what a gallon actually is) to make the math easier in a minute. A standard calorie is the heat to raise one cc of water by one degree C. A liter is 1000 ccs.
So 2 liters of water (half a 4-liter 'gallon') is 2000 ccs of water. 2000 ccs of water raised by 37 degrees C is 2000 * 37 standard calories, or 74,000 calories. A dietary calorie is a kilocalorie, or 1000 calories. So you burn 74 calories by drinking a half-gallon of water at 32.5 degrees Fahrenheit (and that's uncomfortably cold, at least for me).
The original assertion was that that was equal to the calories burned in jogging a mile. That's off, but not, like, an order of magnitude off.