Where does this holiday heft come from? Those additional calories can sneak up on you even if you're trying to "behave." But believe it or not, it is possible to navigate through the holiday season and remain within your calorie budget. Below, our top tips for doing just that:

Don't let your fingers do the walking: By avoiding anything that doesn't require a knife, fork and spoon to eat, you eliminate high fat, high calorie choices like pigs in a blanket and cheese puffs. Many of the appetizers that circulate at holiday parties go for upwards of 300 calories a pop. And who can eat just one? Two notable exceptions: raw veggies and shrimp.

Be a buffet slayer: Cruise buffet tables and survey the offerings before going in for the kill. Once it's on your plate you'll feel obligated to eat it. And the better stuff may be down at the end, tempting you to come back for seconds because your plate is already full. Be last on line; the fattening stuff will be gone. Choose foods that are high in water content and fiber like veggie and fruit dishes, clear soups and non-oily salads. Try everything, but limit quantities.

Be a thoughtful eater: Don't just blindly gobble up nuts and chips. Stop. Think. Is what you're putting in your mouth worth an extra workout? If you really want to nibble on some party mix, put it on a plate so you're conscious about how much your ''nibbling'' adds up. Wait at least 20 minutes before you go back for seconds; that's how long it takes your stomach to signal your brain that it's full. Even if you don't keep an exercise and food diary at any other time during the year, keep one during the holiday season. It will keep you honest and help you monitor your excesses and successes.