Although Punxsutawney Phil predicted an early spring this year, most of us are still caught in the thick of winter. And no matter how you feel about the coldest season of the year, I think we can all agree that it sometimes puts a damper on our fitness goals. When snow is falling, the roads ice over, and the temperature dips below the freezing point, it's hard to get out of bed, much less go for a run in the park. How can you stay fit when you can't even drive to the gym? Winter may throw a wrench in your workout plans, but you shouldn't let it turn you into a couch potato. For help, use the tips below to learn how to stay fit in the winter.