Rewyld Team/
How did 10 000 steps a day became the standard
The number of steps your phone wants you to hit today was a product name before it was a health target. Somewhere on a screen there is a ring to close, or a bar to fill, and the line it is measured against is 10 000. Nobody told you where the line came from. It arrived pre-installed, with the quiet authority of a thing a doctor said.
