If you are going to be running in cold weather, having a warm up to get you started will help. Here’s a good one to try: Winter Prep Workout from Runner’s World.
It typically takes 5-10 minutes to warm up when you go running. (Some people can take much longer). During those few minutes, I found I am cold and sometimes miserable. This warm up can help reduce the misery of winter running and also help you from getting injured.
Anything that makes winter running easier is worthwhile.