According to the theory of general adaptation syndrome, what happens when you cannot adapt to a stressor?

If you are not able to adapt to a stressor, you can end up using up or exhausting all of your physical resources. Then you enter the third stage of the general adaptation syndrome, the stage of exhaustion. During this stage, the parasympathetic nervous system is still activated, so you appear relaxed, but the stressor is still present. In this stage, you are unable to cope with the prolonged stressor, and you can become vulnerable to other stressors.