Yeah it's a little bit extreme but some people actually do that. Eat today. Fast tomorrow. They alternately do that the whole year. I think that once the body gets to learn your eating habits, it will force you to eat more when you eat to compensate for the day you went without food. So while you could be punishing yourself, you wouldn't be saving much money. The more logical thing to do would be to skip a meal and save a little cash every day, if you have to. If I was in a tight spot, I definitely would consider it.