Whats its effect on muslecs, the brain, and the heart? Where is adrenaline made? What is it made of? I've heard that during one you cant think logically and you act based on instincts? (if that's true) what does it mean if u can think normally and have an adrenaline rush? If someone has an adrenaline rush while they have a stuffy nose and soar throat and so on will it temporarily make them seem to disappear? Can someone learn to trigger one when ever they want?I wasn't sure what this would go under. lol