Appearing Stupid To Look Good

Runners are prone to looking silly, perhaps never more so than when they jog in place at intersections, bouncing from foot to foot as if to say, "I'm THIS committed to my exercise."

The motion, more laborious than standing still, is not a necessary part of the workout. If you want constant motion, get thee to a treadmill.

This "running in place" also sets a dangerous precedence. If it became common for your average pedestrian to pantomime the walking motion while stopped at a crosswalk, incidents of strangers pushing people into moving traffic would skyrocket.