Joe Navarro
CNBC Make ItJoe Navarro retired from the FBI after serving as an agent for 25 years. He has been studying nonverbal behavior for more than 45 years and is the author of 13 books, including "Be Exceptional: Master the 5 Traits That Set Extraordinary People Apart," "What Every Body Is Saying: An Ex-FBI Agent's Guide to Speed-Reading People" and "The Dictionary of Body Language: A Field Guide to Human Behavior." Follow him on Twitter @navarrotells.