Learn why your foot is a superhero as "City Walk" takes you on walks around the racetrack, NYC under the moon, and beyond.

In this special health and fitness episode of "City Walk," family physician and past President of the American College of Sports Medicine Dr. Bob Sallis gives facts that promote physical fitness as a reliable antidote to the many conditions caused by sedentary lifestyles.

Also covered in the show is the direct link between a healthy diet and walking, plus an in-depth look at the design and anatomy of a single footstep. Other segments explore the concept of “Volkswalking," a group of adventure-seeking seniors tackling the rain-drenched pathways of the Cleveland Zoo, and a stroll through a NASCAR speedway.