Body language is an argument very interesting because our body can show to the other people how do we feel, if we are lying or if we are self confident. A way to express our feeling with our body is gesture that can change in different parts of the world: for example the finger up to say "I like it" is considerate good in Italy, but non in England because it has the same meaning of the "middle finger gesture". When a person feels powerful or has won something shows his superiority enlarging his body like to say "I've did it. I'm powerful!"; is different when a person feels shy or not powerful: in this case the subject tends to close himself for a sense of inferiority. This situation can be evident in a classroom during an interview between teacher and student: if the student has studied will be self confident and quiet; if the student has not studied will close himself touching his neck and maybe crossing his arms.
