Every person laughs several times a day for different reasons – after hearing a joke, watching a comedy movie or reading a comic book. Humor is one of the important senses that human being is blessed with. Laughing expresses a feeling of happiness. Humor and laughter are contagious and they cause a cumulative effect of amusement and joy. In addition, they offer a number of positive health benefits.
Happiness is a state of mind or feeling characterized by contentment, love, satisfaction, pleasure, or joy. A variety of philosophical, religious, psychological and biological approaches have striven to define happiness and identify its sources.
Philosophers and religious thinkers often define happiness in terms of living a good life, or flourishing, rather than simply as an emotion. Happiness in this older sense was used to translate the Greek Eudaimonia, and is still used in virtue ethics.
A smile is a facial expression formed by flexing those muscles most notably near both ends of the mouth. The smile can also be found around the eyes (See ‘Duchenne smile’ ).
A facial expression results from one or more motions or positions of the muscles of the face. These movements convey the emotional state of the individual to observers. Facial expressions are a form of nonverbal communication. They are a primary means of conveying social information among humans, but also occur in most other mammals and some other animal species.
