I am lucky enough to have a number of teachers in my practice right now.  Voice teachers, piano teachers, P.E. teachers, as well as caregivers where teaching is an integral part of their profession. I have to admit that I work with them with a little extra relish.  Why?  Because it's very efficient.  

When I work with a teacher's Use, what they learn trickles 'Up' to their students.  Besides the thoughts, methods, and Technique they absorb, their Use itself is a teacher for whoever they work with.  Why?  We as humans learn by example. In terms of our physical habits, this phenomenon is specifically traced to mirror neurons--cells in our brain that translate whatever we see in somebody else's body into our own experience.  So when a student of mine is teaching a class how to play guitar, they are folding his good habits of Use into their own playing, especially if they are young and relatively habit-free.  

This doesn't just go for 'formal' teachers.  In life, we all serve as each-other's teachers every day--on small or big things.  Next time you find yourself in a situation where you are the teacher, consider how your Use could be an extra gift to whoever you are communicating with.