I had come across an article about the effects of crying on the individual, and it made me think about examples where tears have a more biological/neurological function than many may think.

https://www.scientificamerican.com/article/sniffing-womens-tears-makes-men-less-aggressive/

https://www.psypost.org/does-crying-actually-make-you-feel-better-new-psychology-research-shows-it-depends-on-a-key-factor/