10 reasons to smile

1. It makes you attractive.
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3. It changes your mood.
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5. t is contagious.
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7. It relieves stress.
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9. It boosts your immune system.
10. 
    
11. It lowers your blood pressure.
12. 
    
13. It releases endorphins, natural pain killers and serotonin - natural antidepressant.
14. 
    
15. It lifts the face and makes you look younger.
16. 
    
17. It makes you seem successful.
18. 
    
19. It helps you stay positive.