First of all, many studies show that when the person becomes nervous his face will be full of wrinkles which will cause old age. Also , it shows that the smiling decrease the quantity of wrinkles. Smiling lifts the face and makes you look younger. The muscles we use to smile lift the face, making a person apper younger. Don’t go for a face lift, just try smiling. Also there are different types of smiles. One kind of smile that it stays memorable. Another kind is dazzling.
In addition, smiling has psychological benefits. Smile protects against depression, causes the nerves and leaks the psychological pressures of life. Smiling changes your mood. Next time you are feeling down, try putting on a smile. There is a good chance your mood will change for the better. Smiling can trick the body into helping you change your mood. Also, the stranger you graced with your smile may go on to pass the kindness to someone else. Who knows how far your original smile will travel ..?
Lastly, smiling has also physical benefits. The smile is a kind of preventive treatment for disease. It has a positive effect on the body. Smile relieves the nerves, heart and brain. It increases the body’s immunity and also strengthens memory. Anger and emotion of the nerves increases the exposure of cholesterol, ulcers, headaches and pains. When you smile you move a 17 muscles only but when you get angry you move 47 muscles of the body muscles. Smiling lowers your blood pressure. When you smile, there is a measurable reduction in your blood pressure.
Smile is important in life. It is amazing in many ways. When you get angry just try to smile you will see that your mood will change. You can gain friends when just smile. You can affect people only when you smile. So , you must smile as possible as you can . 
Thank You very much
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