Where Did 10K Steps a Day Come From?
Don't beat yourself up for not getting your 10,000 steps/day in. While it is a great to strive for 10k, which is about 5 miles, no one is quite sure where that number came from.
A 2019 study shows that 4400 steps (over 2 miles at a BRISK walk @ 4mph) delivers significant health benefits and decreases mortality rates in adult females.
The benefits appear to level off at 7500 steps/day (over 3.5 miles BRISK walk).
By the way, 7500 steps/day would satisfy the World Health Organization's recommendation for 150min moderate exercise a week, or 30min x 5 days a week.