Eating a balanced meal.

Don't eat anything and eventually after about 15-20 hours the feeling of hunger goes away.
The hunger going away is your ... digestive organs losing vitality.
When you eventually eat again you'll be a lot more prone to unhealthy weight gain because your body will say, "Hey look, food! We never get this! Better store all those calories as fat because you never know when we'll get fed again."
Your body will also start breaking down muscle tissue to meet its protein needs, which means there are less muscle cells burning fat.