Body language - язык тела

Voluntary body language refers to movement, gestures and poses intentionally made by a person (i.e., conscious smiling, hand movements and imitation). It can apply to many types of soundless communication. Generally, movement made with full or partial intention and an understanding of what it communicates can be considered voluntary. Involuntary body language quite often takes the form of facial expression, and has therefore been suggested as a means to identify the emotions of a person with whom one is communicating.