This was a good read from Oxygen Magazine and I agree 100% I had to read it 2x to let it sink in. If I am ever running on a treadmill, I always have the incline set to at least 0.5% - 1.0% to seem more like outdoor running. Otherwise the belt on the treadmill is doing most of the work and not you if you were to keep it flat.
Who would have thought walking at 2 MPH at a 2% incline will burn more calories from fat vs running at 6 MPH at 0% incline?!
RAISE IT UP!