Mudra & Spontaneous Hand Gestures
When people are talking about their experience, they make spontaneous gestures that are wonderfully informative. For the student, they are spontaneous prana-filled motions that dance out an evolution. They feel beautiful to the body. For us watching, they teach us about the energy flowing in the student in that moment. For the student, their mudras can serve as a doorway into meditation.
Train yourself to notice and enjoy the gestures people make when they are talking. You can see this even when people are talking on the cell phone.
Like everything in yoga, the spontaneous has been codified, so thoroughly that one can forget that it is natural. Indian Dance is a profound tradition with immense subtlety. Perhaps watching this will help sensitize you to natural gestures.