A late lunch

Lunch :
Kung Pao Shrimp (counted the # of peanuts= 30) - 850 calories
water (12 ounces) - 0 calories
diet Coke (12 ounces) - 0 calories

Total Calorie intake so far: 1191 calories

Now what I don't understand is why water has no calories. According to the definition of a calorie : approximates the energy needed to increase the temperature of 1 gram of water by 1 °C. This is about 4.184 joules. So to raise the temp of 1 gram of water by 1 degree is a calorie. It sounds like it takes energy for the body to get rid of some of the water in our bodies. So maybe the caloric quantity for 8 ounce glass of water should be 1 and not 0. I think I will addend my count at the end to account for this.