1. Prepare By Musharaf Hussain

2.  Smile  Affect of smiles  Historical background  Development of smiling in infants  Social behavior  Laughter

3.  Cultural differences  Dimples  Real smiles vs. fake smiles  Genuine Vs Fake  Hidden emotions within smiling

4.  A smile is a facial expression formed by flexing the muscles near both ends of the mouth  As for me smile mean S –Smart M – Measurable I – Intense L – Love E – Enlighten

5.  A smile makes you more attractive  Smile changing feelings  Contagious smile  Smile relieve stress  A smile increases immunity

6.  Smile low the blood pressure  A smile is like a natural remedy  A smile makes ageless  A smile makes you look successful  A smile makes people think positive

7.  Many biologists think the smile originated as a sign of fear.  Biologists believe the smile has evolved differently among species and especially among humans.  Smile can communicate feelings such as: love, happiness, pride, contempt, and embarrassment.

8.  Newborns often exhibit smiles within the first three days of their lives, especially while sleeping.  The early smiles are referred to as "reflex smiles."

9.  Between 6 and 8 weeks, most babies begin to exhibit "social smiles", meaning the baby will smile at his/her caregivers or in response to stimuli.  Most babies laugh between 3 and 4 months.

10.  Smiling really does increase attractiveness and likability between humans.  Smiling correlates with greater trust,  Increased interpersonal cooperation.

11.  Smile tends to convey respect, patience, empathy, hospitality and compassion.  For example.

12.  In social contexts, smiling is related to laughter. Two kinds of smiling are analyzed:  Smiling is not a pre-laughing device and is a common pattern for paving the way to laughter.  Smiling can be used as a response to laughter in the previous turn.

13.  Smiling is perceived as a positive emotion  In different country “smile” give different meaning. The Japanese may smile when they are confused or angry. South Asia, people may smile when they are embarrassed.

14. Russia consider smiling at strangers in public. Americans smile freely at strangers in public places. Southeast Asian cultures, smile is frequently used to cover emotional pain or embarrassment.

15.  Cheek dimples are visible indentations of the epidermis, caused by underlying flesh, which form on some people's cheeks, especially when they smile.  Dimples are genetically inherited and are a dominant trait.  A rarer form is the single dimple, which occurs on one side of the face only

16.  Real smiles Real smile is also know a Duchenne smiling A real smile shows in the zygomaticus muscles which pulls the corners of the mouth upward. The muscles surrounding the eyes, orbicularis oculi, begin to squint which causes crows feet to occur at the edges.

17. Also, the eyebrows and the skin between the upper eyelid and the eyebrow come down very slightly. A genuine smile is usually more symmetrical than a fake smile and does not last as long.

18.  Fake smile The Pan-Am smile, also known as the "Botox smile", is the name given to a "fake smile", A fake smile uses the risorius mucles which pull the lips horizontally apart.

19. The zygomaticus muscles are only used a little bit, to pull the corners of the mouth up slightly. A genuine smile elicits a sense of well- being and enjoyment in the viewer. A fake smile won't produce the same response

20. Spot the Fake smile - BBC

22.  Happiness is most often the motivating cause of a smile.  Smile play the sweet emotions of the soul  Humans also smile as a result of nervousness, embarrassment and even frustration.