How a person thinks about stress literally changes their physical reaction to stress. People that believe that stress is harmful are much more likely to do die early as opposed to a person who does not believe stress as harmful but still experiences the same amount of stress. The most obvious take away from this is to make sure you look at stress as a normal or even healthy. Your body will respond in a healthy way if you literally think stress is healthy! Yes, what you believe literally changes how your cardiovascular system.