Stress: Mental tension's physical toll
Stress may seem like it's all in your head, but the mind can make the body sick, too -- translating the pangs of anxiety into jitters, headaches, stomach problems and more.
The crux of the problem, it seems, is the human "fight or flight" response to anxiety. When threatened, people become alert and focused as they figure out whether to stay and fight or run.
The body essentially revs...
