I’ve been teaching this pedal stroke drill for almost as long as I’ve been teaching (20 years). I first introduced it at a conference in my session called The Anatomy of the Pedal Stroke at WSSC in 2002. It’s a fabulous visual to help riders connect with their pedal strokes.
Are you or your riders ever tempted to ride in an aero position in your indoor cycling or Spinning class? This Bicycling magazine article will show you conclusively that it’s not really a good idea!