Fitness tracking devices often recommend we take 10,000 steps a day. But the goal of taking 10,000 steps, which many of us believe is rooted in science, in fact rests on coincidence and sticky history rather than research.
According to Dr. I-Min Lee, a professor of epidemiology at the Harvard T.H. Chan School of Public Health and an expert on step counts and health, the 10,000-steps target became popular in Japan in the 1960s. A clock maker, hoping to capitalize on interest in fitness after the 1964 Tokyo Olympic Games, mass-produced a pedometer with a name that, when written in Japanese characters, resembled a walking man. It also translated as "10,000-steps meter,” creating a walking aim that, through the decades, somehow became embedded in our global consciousness — and fitness trackers.
But today’s best science suggests we do not need to take 10,000 steps a day, which is about 5 miles (about 8 kilometers), for the sake of our health or longevity.
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