13 – Look Younger – Smiles naturally lift the face and in studies have shown to make people look younger, around 3 years younger on average.

14 – Longevity – The effects of a good smile extend past just the exterior good looks. People who smile more often live longer too, around 7 years longer than most according to one study. It releases stress, helps the heart, and much more to keep you healthy longer.

15 – Boost Immune System – Smiles help the body relax and this lets the immune system react more quickly and effectively against invaders.