There is a varied gesture in people when we want to emphasize a concept, or deny it clear we have a clear body language. Some actions, sometimes unconscious, are inherent in modern man thousands of years.

While the animals show care in their own way, the man tends to raise eyebrows in some phases of his thought. Not only that, even pupils dilate depending on the emotions we feel during a conversation and the kiss was rather primitive roots dating back millennia, some scientists have expressed the theory that the kissing gesture dates back to the primitive maternal populations where mothers chewed food for their children and children Passau him through the mouth There are indications that some thousands of years ago in some primitive cultures, there was the belief that the union between partners of the lips there was the significance of the union of two souls.

Equally ancient is the shaking of the head to affirm or deny: this has studied the nineteenth-century English botanical Darwin. He said in the studies that the “yes”, a gesture that is accomplished through the head to say remember the sucking of an infant milk maternal parallel with the “no” would reject the breast milk itself.

Still Charles Darwin investigated into the causes of crying: the assumption is that animals operate one watery eye when they have a small foreign body in the eye. While kids are crying to attract attention. No explanation to tears adult: a natural evolution said that one day the man would never cry, except in cases of spontaneous lacrimation, precisely given by a small foreign body.