
Yes, activity trackers are very trendy right now. Yes, activity tracking has become a topic of discussion as common as TV shows. Yes, products that count steps are plethora… But Rome wasn't built in a day. Here is a summary of the milestones of human innovation in measuring the level of activity, in the form of an infographic.

Susie Felber
Susie is a writer, comedian, and producer who has worked in TV, film, theater, radio, video games, and online. As the daughter of a hard-working M.D., she's had a lifelong interest in health and is currently on a personal mission to "walk the walk" and get her writer's body in better shape.
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