Body
Language is a form of human non-verbal communication accomplished by
a series of body postures, facial expressions and eye movements. We
subconsciously know if someone is happy or sad, bored or excited,
thrilled or sleepy just by looking at him. Even though an estimated
60-90% of all human communication consists of body language (verbal
is only about 7%), we were ignorant of this language until the late
1960's when the first course appeared in an American university.
In
spite of our academic ignorance, a number of professionals had
managed to control their body language on a practical level for
specific ends. Good actors for example, took the appropriate body
postures and facial expressions to effectively communicate the
feelings of the character they portrayed to their audience.
Successful salesmen also used body language to gain the trust of
their customers. So did swindlers and politicians. A good speaker
knew when his audience was bored so that he could change his pace or
his subject to reestablish the communication.