If you're a nighttime snacker, you could be adding hundreds of unnecessary calories to your day. It's easy to fall into mindless eating when you're sitting in front of the TV or the computer, and diet experts often recommend that if you are going to snack to pre-portion your food ahead of time to keep from, for example, eating an entire bag of chips.

But if nighttime snacking really seems to be affecting your eating habits, a better solution might be to pick an hour to shut down your kitchen for the night. Tell yourself that once it's closed, there's no going back in for snacks and you might just eliminate those late-night calories for good.