How To Get the Crying Face Filter on TikTok. Those wanting to find the filter to try it out themselves have found themselves struggling, with comments on videos filled with confusion.

Happy crying, then, may be one way of saying, “Please share this wonderful moment.” ... When you face a threat, the sympathetic branch of your nervous system prepares you to fight or flee.

There may, in fact, be a deeper connection between happy crying and sad crying: They are both a response to emotional extremes, which suggests that tears help bring us back to equilibrium.

Research has even shown that people are more likely to offer help to someone who is crying, regardless of whether the tears are sad or joyful. So why do we cry when we’re happy? Because ...