The science of body language has fascinated people for over 100 years, after Charles Darwin first recognised its importance in 1872 in "The Expression of the Emotions in Men and Animals". Ever since then, people-watchers have tried to crack the code of the body's gestures and movements. Whilst some gestures are specific for certain cultures, (for example, a shake of the head means "Yes" in Greece and "No" elsewhere), it appears that the majority of body language is basically the same for all humans across the world.
Psychologists have calculated that 55% of the message that we give comes through our body language, 38% is from the tone, speed and inflection of our voice and just 7% is from what we are actually saying. It stands to reason then, that a basic understanding of how body language works can be a valuable tool to have. It helps us to interpret what people are thinking and reveals what they might want to conceal. This basic knowledge can also be used to enhance your own body language, so that you can fine-tune your own non-verbal signals to send people the kind of message that you want them to receive.