In physiology, a smile is a facial expression formed by flexing the muscles most notably near both ends of the mouth. The smile can be also around the eyes. Among humans, it's customarily an expression of pleasure, happiness, or amusement, but can also be an involuntary expression of anxiety, in which case it can be known as a grimace. There is much evidence that smiling is a normal reaction to certain stimuli and occurs regardless of culture. Happiness most often causes the smile to occur, though. Among animals, the exposure of teeth, which may bear a resemblance to a smile, are often used as a threat - known as a snarl - or a sign of submission. In chimpanzees, it can be a sign of fear.
So do we SMILE enough? Why not?
I noticed once I don't smile enough and it makes me look and feel serious even when I am not, and it reflects on my general mood. It's a facial impression that sometimes you don't realize how it reflects positioning yourself to others, and reflects on your general mood. I knew it's wrong so I decided to smile. But how? Call me a wacko but I started to smile as much as i can even while I am alone and for no reason, try to smile now for no reason, how do you feel. Smiling is a habit that you can control and develop, since it's related to muscles practicing smiling will make you easily smile, even sometimes involuntary.
I do the same when I Sing, Laugh, and Dance ...
Next time when you see me smiling for no reason don't worry I am not weired I am just practicing to SMILE.