I've seen this in three different Walmart stores....if you go to the store before about 9 am, there's folks fast-walking around the perimeter aisle areas, inside the store....they're not jogging, but dang near it.
I hadn't paid a lot of attention to it, until recently, when an older guy that I recognized, nearly ran over me at the fruit and vegetable area....I asked him what he was doing, and he said speed-walking.
Evidently, Walmart either allows or encourages folks to use the inside of their stores for getting their exercise....not too long ago, I saw a rather chunky lady, wearing speedos, face-plant the big cough syrup display case, when she was rounding the corner by the dog food aisle.
Any of ya'll seen this in your stores???