This article suggests that tantrums are good for you. It's even scientific.
"Releasing tension through shouting and screaming is a really beneficial way to expel the negative energies caused by stress," said Judi James, a body language expert.
Of course, I'm not aware of any independent studies that drew the same conclusion. This casts doubt on her opinion. To prove or disprove her theory would require lots of people to participate in research, by doing as she suggests.
I think I should be one of the candidates. For Science!