Whether it is joy or laughter, smiling is always our go-to response. Scientific studies have confirmed that smiling makes us more attractive to the people around us. Also, smiling can elevate your mood and the mood of those around you. Smiling is well connected between good health and longevity.  As proof, Here are the top 10 reasons you should smile every day.
Smiling Makes Us Attractive
Humans are naturally drawn to people who smile. There is a real physical attraction factor linked to the act of smiling. Not surprisingly, more severe or negative facial expressions like frowns scowl and grimaces work oppositely, effectively pushing people away. Instead, use the attraction power of your smile to draw people in.
Smiling Relieves Stress
Smiling not only helps to prevent us from looking tired, worn down, and overwhelmed but also helps reduce stress.  When you are stressed, take the time to put on a smile and spread the positivity around you.
Smiling Elevates Our Mood
Smiling can trigger the release of neural communication boosting neuropeptides as well as mood-boosting neurotransmitters like dopamine and serotonin. Think of smiling like a natural anti-depressant.
Smiling Is Contagious
Smiling can also change the moods of others and make things happier. Your brain is responsible for controlling your facial expression of smiling which is an unconscious automatic response area. Meaning that smiling can be completely unconscious, particularly when it comes to our habit of mimicking another person's smile. Yes, it is scientifically proven that smiles are contagious.
Smiling Boosts Your Immune System
Smiling can also boost your immune function because you are more relaxed (thanks to the release of certain neurotransmitters). 
Smiling Lowers Your Blood Pressure
Smiling can reduce your blood pressure. Do a little experiment with your blood pressure monitor at home and see the difference.
Smiling Makes Us Feel Good
According to scientific studies.  Smiling releases endorphins, natural painkillers, and serotonin. These three neurotransmitters make us feel relaxed from head to toe. 
Smiling Makes You Look Younger
The muscles we use to smile also lift the face, making a person appear younger. So it’s like a facial work out to make you look younger.
Smiling Makes You Seem Successful
Studies show that people who smile regularly appear to be more confident and show that they are approachable. With this, you are more likely to be trusted in a position that your company needs you. In other words, you’ll get a higher chance of being promoted. 
Smiling Helps You Stay Positive
Even when a smile feels unnatural or forced, it still sends the brain and ultimately the rest of our body the message that "Life is Good!" it exercises your optimistic way of thinking that keeps you away from stress.