I think we all know taking a walk is good for you, but it still helps to be reminded. Even better if presented with actual evidence that - yeah, you should probably budget some time in your schedule for a walk or two today.

Studies often measure and quantify things that we believe to be true.

In this same forum I have read someone stating that if it was possible to distill the benefits of exercise in a pill they would consume it, so I would not take for granted anything related to exercise (or diet) with these folks.