The sweeping judgments and inferences we make from body language can predict meaningful life outcomes like who we hire, promote, or date.

One research study found that when people watch 30 second soundless clips of physician-patient interactions, their judgments of the physician's niceness predicted whether or not that physician will be sued.

Our own personal non-verbals influence others greatly, but not so much ourselves.

When someone is being really powerful, we tend to mirror them.

High-power alpha males in primate hierarchies have high testosterone AND high cortisol.