Why intermittent fasting fails when you ignore what you eat?

Fasting lowers insulin. This allows stored fat to be used for energy. When you don't eat, it's not going to trigger those specific insulin and other fat storage hormones. So that means your body's going to have this time where it can repair itself and it can also release the fat that's being stored so we can burn that for energy instead. Fasting triggers cellular repair processes that do not occur in a fed state. In a fed state, your liver is really preoccupied in storing and metabolizing that food. And when you give the body a chance without food, it's actually really positive for the liver, because the liver can then start burning fat, which we all want, especially when we are wanting to drop excess fat weight. Intermittent fasting simply increases the amount of time your body spends in this repair and release phase.