Feedback after a class is so important, both to me and to my students. I normally ask for guidance to be able to deliver the practice my students need on a particular day, and the needs always vary. Sometimes more spiritual, sometimes more physical.
Too many of us have had painful experiences in some aspects of our lives that manifest in others in all sorts of ways, both expected and as a complete surprise. In the case of yoga, sometimes the verbal instructions teachers give in class with the best of intentions can make some students feel uncomfortable, because they can act as triggers. Touching for a well-intentioned hands on adjustment can activate a trauma flashback for a survivor, particularly if they are approached from behind.