The busiest time of year is probably not the best time to start up a new work out plan, though it may work for some people. I think the most realistic goals to have during this season are ones of maintenance. If you don't have a current routine, try keeping your focus on staying active in daily activities. Take the stairs. Make an extra loop around the grocery store. Shovel the driveway (just don't hurt your back ;)). Take a walk, even if it's in the snow...