You've done battle with party buffets and holiday cookies before, and even though you know what to do (fill up from the veggie platter, chew slowly, yada yada), somehow the buffet always wins. Then it's New Year's—and you've packed on an extra few pounds. But that's not going to be you in 2015. We ditched the usual tips and tapped everyone from celebrity trainers to food pros who are constantly surrounded by temptation for their best strategies to avoid gain—without sacrificing fun.
Focus on just one healthy habit "I try not to give myself too many rules when at a party. Instead, I zero in on a single healthy practice," said trainer Gunnar Peterson, whose clients include Khloe Kardashian and Sofia Vergara. "It can be anything from not drinking alcohol to skipping the passed app...
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