Swearing off celebrations and not baking a single cookie this season translates to a big "Bah, humbug!" But the other extreme can also get you in trouble. "People tend to go overboard in terms of calories at year-end parties," explains Elizabeth Somer, R.D., author of Eat Your Way to Happiness. "Anything you can do to rein things in makes a difference." That means working out before the soiree, having a pre-party snack (so you're not ravenous later) and making the hors d'oeuvres your dinner. "Choose treats that won't pack on pounds and are special to the time of year," adds Somer. These smart food swaps can save you 800 calories in a night.
Instead of the Naughty ...
1/2 cup mixed roasted nuts (400 calories, left photo)
... Have the Nice
1/2 cup roasted chestnuts (104 calories, right photo)