[tt293]

By working a healthy 8 hours a day, and integrating walking into their everyday activities: walk to the store instead of taking the car or getting things delivered, for example. Although I do agree that it depends on the environment you live in - whenever I found myself in dense built-up inner-city neighborhoods with a lack of green, my step average was just half of what it was in more walkable, leafier neighborhoods. While not having lived there myself, I imaging US suburbs would be equally detrimental to my walking habits.

[woopwoop]

But going from grocery delivery to walking to the store is not integrating it into your everyday activity. That's restructuring your life. Sure, I could walk to work and back every day I go to the office, but it'd be 45 minutes a day. That's a highly non-trivial time investment. And it wouldn't get me the equivalent of what I get from my under-the-desk treadmill, which requires a time investment of approximately zero.