Smile is the one of the natures most precious gift to the humans.A smile is a facial expression where flexion of the muscles near both ends of the mouth and flexion muscles throughout the mouth creates a characteristic expression.Among humans, it is an expression denoting pleasure, joy, happiness, or amusement and believe this is the only species that have ability to express their feel through this gesture by the use of facial muscles.There might be some other species also but i dont know about them.But still i believe there is some way out there just we don't know.Whenever you happen to see a new borne baby.Its first smile is about at the age of approximately two months and you will notice the sea of joy on the baby's mother. whenever she sees the smile on her baby's face,nothing can compare that joy.The baby understands the psyche at this stage of the mom.you see tiny fingers,soft chubby face,beautyful eyes and that tiny organism bearing that smile ,that moment i feel is the greatest moment endorsing peace and tranquility that might be difficult to find even in the eden.There is no artificiality in that smile and that smile can be compared to the purity and without any selfish desires.
Remember the days when you are stressed due to many reasons ....a cute smile of the loved ones is so much soothing that you get stressed out in a second.This great chemical change in the brain is responsible for the wonder works of the human.Remember the tough times you are facing beaten to the ground by destiny a cute energy pulse in the form of a smile from your beloved gives you strength to defy the destiny.
The day when you are out of mood then this precious thing comes to your rescue and a smile tends to convey respect, patience, empathy, hospitality and compassion and thus helps you to cope with the stress.
the smile is useful in many ways helping in making social interaction more lively and less likely to create rifts.If you are not in good mood then smile prevents this contagious thing from spreading instead it spread itself in a super-contagious way.
So friends ,never let the smile leave you let it give you the power to drive you through this life and if possible carry that even beyond.