那三條很好，很實在。每日萬步，源自日本人信口開河的廣告宣傳。美國人說話了：七、八千步足矣

這個鏈接裏的文章，有研究數據講利弊
https://www.insider.com/walking-10000-steps-for-health-not-science-based-in-marketing-2021-7

• Walking can help reduce your risk of illness and improve mental and physical health. 
• But it's an old marketing myth that the optimal number is 10,000 steps a day.
• For health, researchers found 7,000 to 8,000 daily steps was beneficial.
• 
   

10,000 steps a day started as a marketing slogan

The idea that walking 10,000 steps is optimal came from a catchy ad in Japanese,