Once under the influence of a stressor, people’s bodies
respond in remarkably similar, predictable ways. For example, when asked to give a speech for
a class, your heart rate may increase, your throat becomes dry, palms sweat,
and you may feel lightheaded, dizzy, and nauseous. If an individual lost her or his job or
discovered that her or his partner wanted to terminate their relationship, s/he
might experience similar sensations. It
is clear that different stressors are able to evoke these common physical
reactions.
Selye described the typical physical response to a stressor
in his general adaptation syndrome model.