Blood Pressure is the pressure exerted on the walls of your arteries.  Ideal Blood pressure is considered around 120/80. Anything above 140/90 is consider high blood pressure or hypertension.  It develops over time due to unhealth lifestyle choices such as stress or inactive lifestyle but can have some hereditary links If left untreated it will lead to heart attack (MI), stroke (CVA), or disease to other organs in your body such as the kidneys.