but even the experts can only fake body language for a short period of time and eventually the body will emit signals that are independent of conscious actions. Many politicians are experts in faking body language in order to get the voters to believe what they are saying and the politician who can successfully do this is said to have ‘charisma’.

Some people whose jobs involve lying, such as politicians, lawyers, actors and television announcers, have refined their body gestures to the point where it is difficult to ‘see’ the lie, and people fall for it, hook, line and sinker.