Why women smile

Women, as a rule, smile more than men, but the difference between the sexes disappears depending on the circumstances. For women, smiling is the default option.

For men, the default is not smiling.

"If you don't know what to do and you're a female you smile because you know you're not making a mistake. If you're a man, you don't smile,"According to some researchers, smiling is less a sign of underlying emotion than a social display meant for others.