One of Aristotle's theories.
Releasing and thereby relieving from strong or suppressed emotions. It
is usually done due to needing to be relieved from negative emotions. If
you are reliant on it, this can make it even more troublesome, as karma is usually not
guaranteed to be done, as there will be persistent or worsening evils in
the world. Still, I think coping mechanisms are mostly natural to human
darwinism.