How 10,000 Steps Became A Thing

"What 10,000 Steps Will Really Get You":

I-Min Lee, a professor of epidemiology at the Harvard University T. H. Chan School of Public Health and the lead author of a new study published this week in the Journal of the American Medical Association, began looking into the step rule because she was curious about where it came from. “It turns out the original basis for this 10,000-step guideline was really a marketing strategy,” she explains. “In 1965, a Japanese company was selling pedometers, and they gave it a name that, in Japanese, means ‘the 10,000-step meter.’”

Based on conversations she’s had with Japanese researchers, Lee believes that name was chosen for the product because the character for “10,000” looks sort of like a man walking. As far as she knows, the actual health merits of that number have never been validated by research.

Scientific or not, this bit of branding ingenuity transmogrified into a pearl of wisdom that traveled around the globe over the next half century, and eventually found its way onto the wrists and into the pockets of millions of Americans...