Blood pressure is the pressure that the blood on the walls of arteries when the heart pumps blood through the arteries exercised. A certain amount of pressure or force is necessary in the bloodstream at the top of most organs of the body from head to toe. But when this pressure exceeds the normal, this is called hypertension or high blood pressure (hypertension). Top BO is a "silent killer" because, for some people, symptoms at all the ruins and quiet area of the body.
Normal Blood Pressure should be around 120/80 BP and BP was between 120/80 and 139/89 on the status of the pre-high blood pressure and 140/90 BP said blood pressure. Number is greater than the systolic pressure. The systolic pressure is an indication of the maximum pressure in the arteries when the heart contracts and pumps blood and pushed into the arteries. In other words, it marks the maximum amount that BP may be exposed to the arteries.