I've noticed that teaching appears to exaggerate certain... character traits of mine.
You see, I'm a big hand talker. I get this from my dad, who was known as the "[phone gesture] [flat surface gesture] guy" by the administrators at my middle school, since he was always coming to pick me up from school sick (I would call him from the nurse's office, where he would find me laying down, hence the hand gestures). Although my sister found them quite annoying, my hand gestures have always been appropriate. However, when I'm teaching my hand gestures seem to grow with the volume of my voice. It looks like I'm landing a plane.