"Nearly one in four people in the Atlanta area are exercise enthusiasts stuck in neighborhoods without sidewalks or other walking amenities, according to a study that illustrates a problem for many Americans. Researchers said the findings point to the need for more exercise-friendly places to live." Link.
So true. It really blew me away when I lived in Atlanta how there were no sidewalks. People there thought I was weird for complaining. "Get a car." I heard that all the time.