The Centers for Disease Control says an obesity epidemic threatens the health of millions of Americans. A recent CDC report says a quarter of all Americans get virtually no exercise. Experts say regular exercise is a key to keeping weight under control. For many people that means a stop at the health club. It's not quite as easy for those living in small towns. Today, we begin a new series from Mainstreet Radio, "The Fight Against Fat". Dan Gunderson reports for some people the barrier to fitness lies partly in geography.