I have various ways of releasing pent-up emotion and stress. Lately I've been yelling.
Not at people, or pets, other drivers, or really anything in particular. It's not really even a yell per-say. More of a guttural noise. An expulsion of air from the diaphragm releasing a primal bellow.
Some people like to cry to release pent-up emotion, especially when it is frustration. I find exercise or excessive house cleaning is good for frustration. (By the state of my home anyone could guess that I haven't been using the latter for releasing frustration). I know that crying does release some good chemicals into the brain, you can feel it when it happens. A release and a slight cooling sensation. I find the yelling (or grunting, as it may be more appropriately described) to have similar effect and much easier to call forth.
Tonight I topped off a healthy bout of yelling, with a long session of hand watering in the garden. Not really necessary due to the soaker hoses we've installed, but pleasant and appropriately cathartic none the less.