Why we don't cry? How the 'smile' expression started at first?
babies smile.so its nothing learned.it just a natural expression.And when other animals cry,they do it a lot like us.there is no logic behind it.its like that
Smiling when we are happy and crying when we are sad are both natural emotional responses that have roots in human biology and psychology. Smiling is thought to have evolved as a social signal. It communicates friendliness, trust, and cooperation to others. When we are happy, our brain releases chemicals like dopamine and endorphins, which trigger physical responses like smiling. Crying serves as a physical release of emotional tension. Tears can carry stress hormones and other toxins out of the body, which may help reduce emotional distress.
You can try crying when you're happy and you may see why :)
@FQT said in #1:
> Why we don't cry? How the 'smile' expression started at first?
i prefer you to watch "inside out" good Disney movie
