PizzaPlanetPizzaGuy t1_j5c1utt wrote

It's been a thing since before women lost their pockets, not sure of the when and where though. When it comes to body language both hands in your pockets indicates shyness and powerlessness, which is not very professional and not what you want from a leader. A lot of manners come from policing your actions to improve your body language and therefore how people perceive you.