If a Yoga student has high blood pressure or a heart condition, Bhastrika Pranayama is not recommended. A daily practice of Bhastrika Pranayama, for five to ten minutes prior to asana practice or meditation, will help to calm and soothe the mind as it invigorates the body.
Feelings of attachment and aversion are quite natural for all of us, whether we are Yoga teachers or practitioners. We may find that we like a certain atmosphere in which to practice or teach.
Mindfulness is actually a simple concept, but becoming mindful can be difficult, because it often contrasts with our usual state of being. Most of us are used to worrying about problems for days at a time, stressing over things in life that can't be changed, or burdening ourselves with commitments, activities, and engagements.