Although there are some months left before having to worry about your beach body again, this doesn't mean you are allowed to indulge yourself in endless nights out, partying, drinking, and satisfying your munchies with pizza leftovers and burgers. Yes, the holiday season unofficially started right after Halloween, with most retailers switching pumpkins for Christmas tree decorations, tinsel, and sparkle. America's famous pumpkin spice latte was already replaced with a cup of hot cocoa or delicious mulled wine, while Christmas markets lure you with their wide selection of decorations, homemade goodies, and unique presents for your family. Although December is the month when most of us feel weak against the constant temptations, there are still various easy ways to get through the season without gaining more than a few pounds. Here is how to stay in shape and have fun with your best friends or family at the same time, the winter holiday edition.