In order to lie, a person has to have a conscious thought. This conscious thought immediately sets off three simultaneous reactions.

Overall, you want to make sure that your body language is aligned with your words. If you are telling people you are confident, show confidence.

Smile, don't slouch, and don't cross your arms. Your parents probably taught you to use certain body language to appear friendly and polite. But new research shows that your body language does much more than just change the way other people see you -- it can even change how you see yourself. Psychologists describe this phenomenon as "embodied cognition."Just watch the latest video in our Talk Nerdy series above to learn more.

Many of us know that body language is pretty important. After all, it is an effective way of communicating with people around you without using words. But new research shows that your body language does much more than just change the way other people see you -- it can even change how you see yourself.Psychologists describe this phenomenon as "embodied cognition." HuffPost Science's Jacqueline Howard reports.