We have a beloved student (hi, Rich), who calls this, "Dave's fave". It is one of Dave's faves. Alternatively, that same student sometimes calls this the plague bacillus (because the shape it makes on the floor is the same as the shape of a plague bacillus under a microscope).

Up to now, most of the steps have either been flowing but simpler or less flowing and more complicated. This one has a fair amount of "stuff" going on but, as you do that stuff, it needs to happen without excess pause and interruption.

It really is a lot about the traveling of the center. Each of the motions of the lead and follow is really about the movement of the center. In other movements, there is also other stuff going on at the same time (such as movement of the upper body). In this combination, there is really only that movement of the center. (Well, the legs always move but not the upper body).