My favorite saying on this subject is that you can't outrun your fork. I lost a lot of weight when I was running a few years ago but it was largely from not eating much. But running nonstop for over an hour does burn calories at a level that is hard to match. I like how you could do it for an hour even if you could only spare an hour; it did determine when you would shower, though. Now I walk, as I tore my knees up doing all that running (it exacerbated an inherited arthritic condition). Not quite the same burn but it helps keep me in shape.