Hypertension High Blood Pressure

When pressure exerted by blood on the walls of the arteries is greater than normal, blood pressure rises. Usually, blood pressure falls when at rest. It rises in response to strenuous physical activity, stress, or a perceived danger in which the sympathetic nervous system dominates, arteries constrict, and more blood is sent to the brain increasing blood pressure. This heightened state of the sympathetic system does not seem to retreat in individuals with hypertension and damage to the heart,...