What is non-verbal behavior and how is it related to verbal communication? How to master the body language and skillfully use its signals? How to use the environment to improve the quality of communication? How non-verbal signals can allow us to show strength and influence, preserve identity and personal integrity, and gain the location of the interlocutor in the most difficult situations in life. The most complete, most popular textbook is recommended for everyone whose activities are related to communication with people.