When I was younger I read a piece on Marlon Brando that detailed how he would sit and make believe he was talking on a payphone in a store in Times Square that had a view of the street. He explained that he was trying to observe the behavior of people as they walked, talked, stood, etc. He said he wanted as an actor to observe just exactly how they held their heads as they listened, or held their heads as they talked.
It struck me that this investigation into behavior was also most important to a photographer.
As you look at these images you will see that most people talk with their hands, touch, embrace, cajole, and accentuate all sorts of verbal communications with physical gestures.
It’s fun to notice things never noticed before.