Here's what I can't do: eat, sleep, read or concentrate. If I try to read, I find I read the same paragraph over and over. If I go to the market, I find "mystery food" in my pantry (Did I buy that?)
I tend to throw myself into mindless physical activity, like weeding, painting walls, washing windows. This is my "high stress" behavior.
For the "normal stress" that might pop up, I munch, lose myself in a book or tv binge. My favorite de-stressor is spending time with little kids and Play Doh, crayons and paste.