I agree that stubbed toes needn’t be a central example of “acute stress,” and I would hope that most people are just using it as you suggest—a convenient analogy for a minor but pretty-clearly-bad form of injury, one that stands in contrast to plausibly beneficial stressors like exercise.
I agree that stubbed toes needn’t be a central example of “acute stress,” and I would hope that most people are just using it as you suggest—a convenient analogy for a minor but pretty-clearly-bad form of injury, one that stands in contrast to plausibly beneficial stressors like exercise.