Lots of people resolve to get more exercise in the new year, but ultimately decide it's too hard to find time to go to the gym or fit in a workout each day. Here's an activity that just might help you live up to your objective. It's called Volkssporting, or non-competitive walking. Technically, it can also be biking, swimming and in some parts of the country, snow-shoeing. I spoke to Henry Rosales, who Executive Directs the American Volkssport Association, headquartered in Universal City.