Body language

Body language is a term for communication using body movements or gestures instead of, or in addition to, sounds, verbal language or other communication.
I found in the Internet one chart in which was written about nonverbal behavior and how to interpret it. I will write here some examples.
Examples:
1) Standing with hands on hips that mean readiness, aggression.
2) Hand to cheek that mean evaluation, thinking.
3) Biting nails that mean insecurity, nervousness and etc.
It is good to know about body language because than you can more easily to understand people.