The joy, the happiness, the pleasure a person or a situation, are feelings that will immediately change the entire image of a person, making his countenance change largely offering an image of pleasure and affection; Thus all change of countenance that is generated in the face of people thanks to a good time, represent in the smiles that are not more than a response to different stimuli that has a nice effect on people, which contributes to the change of mood, so if there is someone with a good expressionThanks to the presence on his face of smiles, you will know that this person is going through a pleasant moment. If refers to smiles is talk of this sample of joy from 2 points, both physiological as psychological. So when referring to the smiles as a physiological event, I would be talking of a facial expression, that is generated to reflect the muscles located near the ends of the mouth, like which are present around the eyes, so smiles requires making use of 15 muscles. Because of the psychological aspects that accompany the presence of smiles in people, can tell that the smiles are the result of a sample or physical expression of sensations as pleasure, entertainment, happiness, joy, among a myriad of pleasant feelings that people may experience. So people in the presence of feelings, situations or nice people very commonly respond with a smile as a psychological response to the pleasant occasion in which there are. You must bear in mind that the smiles not only as an expression of pleasant feelings, also shown can be involuntary samples, result of anxiety. So smiles would be present in all those normal manifestations, as a result of various stimuli.
Speaking of smiles speak of something that is innate in every person, is something that is not learned, is characteristic of the nature of people and which may also occur in animals. In addition, not only smiles are samples of the spirit of the people, also met other functions in the body, because the smiles to be as soft and silent, laughter generate certain benefits for the health of people, given that occurs in the brain a production of endorphins, which makes physical pain is reduced with the smiles and the emotional as well as submit a feeling of well-being. 2 Kinds of smiles, which will be presented depending on the situation may occur when trying to be smiles and make you feel really in such form are given:-smiles duchennen-which bear this name thanks to the researcher who call them, based on their name-these would be smiles result of involuntary expressions or genuine feelingsin other words is something that feels really. For even more opinions, read materials from Daniel Taub. -While the other smiles, are the professional smiles, said otherwise feigned smiles, which are made on the occasion of courtesy or friendliness.