Doesn’t everyone want to be able to do a handstand in the middle of the room? I can’t tell you how many people I’ve met who do. How many are actually willing to do the work involved in actually making it happen? How many are willing to spend the time to create the patterns in their practice that support making this happen and then do it consistently? I truly believe that it is this part that prevents people from being able to do the handstands they so desire.
As a preface, there was an original question asking if someone could explain what nutation and counternutation actually were and how it might relate to backbending type postures such as ustrasana, kapotasana, and urdhva dhanurasana.