This is a follow up to my previous post on the health benefits of hunger and fasting.
First, don't snack. Eat your breakfast, lunch, and dinner, fill yourself, and then don't eat until the next meal.
Then, skip an average of two meals a week. Don't skip dinner--that's a family meal; and leave either Saturday or Sunday as a day to eat whatever and whenever you want. That leaves twelve other meals to choose from. Schedule yourself so that some weeks you skip no meals at all and others you skip four or more. Occasionally, skip two meals on the same day.
I eat a little bit more during the meals before and after the ones I skip. It makes things easier, but I don't know if it's a good idea.
I do some additional fasting on Jewish fast days and during the Days of Awe (I recently skipped seven meals two weeks in a row, which wasn't as hard as I'd thought it would be), and for two months a year I refrain from fasting. Intermittent fasting keeps me feeling healthy, if a bit out-of-balance at times; it helps keep my weight low; and it gives me a lot more energy (not to mention spare time). It requires a lot of self-control, though--sometimes I'll cheat with a glass of milk, a tortilla chip or two, or a couple squares of chocolate (for the caffeine). See my previous post for other health benefits; there's also plenty of good information (and more challenging routines) on the web (just search for "intermittent fasting").