For general health benefits, it's simple: walking is easier to do consistently than running is. I walk to work and to get groceries, and each of those is ~20 mi

For general health benefits, it's simple: walking is easier to do consistently than running is. I walk to work and to get groceries, and each of those is ~20 minutes each way, so I'm getting in almost an hour and a half of walking most days on top of whatever else a given day has (I live in a Nordic city, so lots of stuff is walkable). However, in my current state, I don't think I would be able to comfortably run the same distance every day. If I got into the habit, though, I expect I'd see more changes to body composition, though, yes.