Early in the morning before you eat, your levels of muscle and liver glycogen (stored carbohydrates) are low. If you eat dinner at 7 p.m. and you eat breakfast at 7 a.m., that s 12 hours without food. During this 12-hour overnight fast, your levels of glycogen slowly decline to provide glucose for various bodily functions that go on even while you sleep. As a result, you wake up in the morning with depleted glycogen and lower blood sugar - the optimum environment for burning fat instead of carbohydrate. How much more fat you ll burn is uncertain, but some studies have suggested that up to 300% more fat is burned when cardio is done in a fasted, glycogen-depleted state.
If you starve yourself you will be looking to step inside a coffin.Just eat healthy foods and exercise - the weight will come off fine.
