The idea of fasting is to feel hungry. That's how you know that cleaning is starting. Our stomachs are extendable pouches; the more we put in them, the larger they will get. If we keep them full, then they will lose their elasticity. The more we fast, the smaller the stomach will get and its elasticity will improve. Eventually, your hunger will reduce. If hunger is intolerable, you can have a vegetable juice or coconut water.