There are as many ways of "running in place" as there are runners. One day my SO was exercising - as she said, "running in place". It didn't look right to me b/

There are as many ways of "running in place" as there are runners. One day my SO was exercising - as she said, "running in place". It didn't look right to me b/c rather than push off upward with her toes (and consequently a little hop), she was bending her knees and, only then, pushing with the toe. The result was a very low-energy "running in place" where the hips rotate to follow the knees. This puts almost no stress on the ankles and is easy on the calves. OTOH at least she was trying, so I kept my mouth shut!