The truth about 10,000 steps a day: the number wasn’t science, it was the brand name of a pedometer a Japanese company launched around the 1964 Tokyo Olympics — and later research finds real health benefits from as few as 4,000 steps

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The daily step goal on hundreds of millions of wrists and phones did not come out of a laboratory. It came out of a marketing department. In the mid-1960s, riding the fitness buzz around the 1964 Tokyo Olympics, the Japanese clock and instrument company Yamasa released a step counter called the Manpo-kei. The name means, ... Read more