I mean, anecdata, but after staring at a monitor from a chair all day, it really does my heart and brain good to go for a walk outside in my local preserve. I notice a big difference when I can't go for whatever reason (usually weather related). The preserve is quiet and peaceful in ways the local street is not.

But moving to within some distance doesn't mean they went walking there. I'm not sure how valid this study is. I think we've already done studies regarding sunlight exposure and just getting outside being good for you (assuming your environment is not bad). So was it just being outside made them feel better, and having the paths and whatnot made it more likely that they would go for a walk? Or even maybe just more likely that they take breaks? I know I'm terrible at taking breaks.