"One Small Step" - Dynamic Health Data Visualization

Dynamic data visualization showing a person's cumulative steps throughout a year. The goal was to give users something long-term to work toward. The large footprint on the right starts out empty, as just a gray outline. Then for every 4,000 steps the user walks, a smaller footprint is added to the outline. So the more steps a person tracks, the more complex and interesting the visualization becomes.

You can see more examples of the visualization rendered here:
http://elih.co/one-small-step.html