You are simply experiencing what I have scientifically coined an "Arma-phobic Response." It starts in the pit of your stomach and travels through the body until reaching the spine. It then travels up the spine in a tingling-like fashion on through the cerebellum finally positing itself in the frontal cortex. At this point an incredible lightness of being is felt when one contemplates the emptiness of death.
Usually, conjuring up images of Fred Franz foaming at the mouth uttering inspired prophecies returns the body and mind back to normal. A double scoop of Haagen Daas ice cream administers the final anadote.