The 10,000-step goal on your watch is a 1965 pedometer slogan, and the research it borrowed authority from says most of the payoff arrives well before you reach it.
- The number came from a Japanese clock company's Manpo-kei pedometer, picked because it was round and memorable, not because anyone measured it
- Half the maximum benefit is already banked by 4,000 to 4,500 steps a day
- Over 60, the longevity gains stop climbing around 6,000 to 8,000; more buys nothing
- 7,000 steps tracked with 47 percent lower mortality than 2,000, and researchers call it the realistic target
These are observational numbers, not proof. But the ten thousand was never the line between a healthy day and a lazy one. It was a good name for a pedometer.
