Stressed? Read this

Is stress causing you physical pain?  I just read through this article and thought this was a pretty interesting 'experiment':
Take your hands and touch the back of your neck.  If your hands are cold, you're stressed; if they're warm, you're relaxed.
I think my hands are sometimes cold because, well, it's just cold in my office...or I forgot to bring a sweater!  I also read in job interview tips that if you tend to have cold hands, run them under warm water before the interview so you don't shock the people with whom you shake hands.