Did you know that when you chew ice you burn calories?
Yup, the ice causes the temperature in the area around your stomach to drop. So your body has to burn some calories to get the stomachs temperature up.
You can burn up to 75 calories by eating a bag of ice.
This is not good and its not bad. Its just the way it is. The only thing bad about chewing ice is the hardship your teeth have to go through, that is why I always get soft ice that I barely have to chew.