The 10,000-step rule has permeated fitness culture for years, despite being thought up by a pedometer brand in Japan to sell more devices, rather than being backed by any actual scientific evidence.
Perhaps it caught on because it's an easy whole number to aim for on a fitness tracker, maybe because 10,000 steps is thought to burn anywhere between 275 and 820 calories, depending on your weight, or because you could spread your steps out throughout the day rather than doing one walking workout.
