[Mokka]

First of all... eating ice cream when you are sick is not ok. It is hard on the digestive system and it is mucus forming. Idk what kind of sick you are Will... but I guess I still go by the old adage...feed a fever... starve a cold. But when I say starve a cold... I mean plenty of fluids...and not just water when you are sick...because your body needs nutrients to heal....so juice, herbal tea...soup broth...
Water fasting can be done... I don't recommend it though...safely by someone who starts it in good health. If you are sick...water fasting isn't going to help you.