When you spend the bulk of your time driving, it's easy to forget how the car looks from the passenger seat.
Aside from covering content that I should have known already, one of the joys from taking Hillsdale's Constitution 101 course is I get to see a class from an angle that I haven't seen in a while. When the course is over, I plan on doing a full write-up of my experience.
For now, I encourage teachers to find areas to be students. Whether a yoga class or something more formal, that experience will do more for your teaching ability than reading the latest pedagocial theory.