And I always wondered if drinking a glass (16oz) of 0 degrees water was burning the calories required to heat it where you could drink enough water to offset a donut in a morning. (Forgive the lack of math here, I'm about to pass out in bed.)
Quite simple math, since a calorie is the amount of energy required to heat a mL of water by 1°C. Thus a food Calorie (1000 calories) is the amount of energy necessary to heat a liter of water by 1°C. Human body temperature is 37°C, so you burn 37 calories for every liter of 0°C water ingested. The average donut has 195 Calories. Thus you must drink 5.27 liters of 0°C water to cancel out the calories gained from eating a donut. Not very realistic.
No, you are off by a factor of about 10. 16 oz ~ 500 ml. Body temperature - 40 celsius. 1ml water needs ~ 1 calorie to go up 1 degree celsius. The product is about 20 kcal. A medium dunkin donut is about 200 kcal.
