As a yoga teacher you will have to deal with students who all come to your class for different reasons; one wants to become more flexible or stronger, the other wants less stress in his or her life, improve posture, have more energy or work on improving a complaint or condition. A combination of these things is of course also possible.
Giving all these students what they want is a huge challenge for you as a teacher.
Now imagine if you had a tool at your disposal to help them achieve their goals. How beautiful would that be?