Body language plays a huge role in effective leadership communication. Some of it is learned, and a lot of it is innate. We all know that body language affects how others see us, but it may also change how we see ourselves. In this video, social psychologist Amy Cuddy shows how “power posing” — standing in a posture of confidence, even when we don’t feel confident — can affect testosterone and cortisol levels in the brain, and might even have an impact on our chances for success. It’s a tad on the long side, but worth a watch.