Actually I seldom get outwardly stressed, and I'm not usually aware if I am inwardly, either. The first I know of it, if I am, is if I find that just brushing against a wall or lightly hitting my back against a door or something, really hurts. Because my muscles are all so tense and therefore tender. That happens sometimes, but I still don't really realise what the cause of it is. I can seldom point to something and say "I'm stressed because X is making me feel Y".
Most stuff just turns into anger, if it's bad stuff, and if that builds up to a point that's unpleasant enough for me to notice or to impinge on how I feel, I just get drunk til I pass out. Then it's gone in the morning. I don't really need to do that more often than say, once every couple of months, though if the stress is particularly bad (like a family member dying and me having to do all the arrangements for example) then I'll probably spend a good couple of weeks mostly either drunk or hungover, until I realise I'm making more than one trip to the bottle bank per week to keep enough room on my desk to see the PC screen past the bottles. Then I figure it's time to kick it, and I stop. Yep, just like that