In a human body when heart beats it pumps blood throughout the body for the supply of oxygen and energy. The blood while circulating exerts pressure on the walls of blood vessels. This pressure is your blood pressure (BP) or arterial blood pressure. It is usually expressed as 2 numbers systolic and diastolic pressure and is expressed in 120/80 mm Hg (millimeters of mercury) which is normal BP for an adult.
According to expert doctors If the blood pressure readings are 140 over 90 or even high for a consistent period then you have a HBP