There seems to be two schools of thought regarding the position of the pelvis in parivritta trikonasana. Some teachers insist that the pelvis should be held in a level position and that the rotation should primarily occur in the spine, while others hold the view that the pelvis doesn't need to be level and that there are in fact benefits when you allow it to rotate (see a New Take on Twists by Jason Crandell, where he indicates how his view has changed about the position of the pelvis during rotated postures). I hold the latter view, that the pelvis should be allowed or even encouraged to follow the lumbar spine into the rotation, and in the following video present three benefits for doing so.
The three main points that we explore in the video are that letting the pelvis follow the rotation of the lumbar spine will...
As usual, please share your thoughts and opinions in the comments below!