Read about the categories of blood pressure in a short article by Dee Connelly, a registered nurse at the US Army Physical Fitness Research Institute, using the link below.

Did you know that high blood pressure is a factor in 67% of heart attacks and 77% of strokes in the United States.

Reference

Connelly, D. (2013) Blood Pressure – Know Your Numbers. Available from World Wide Web: http://www.carlisle.army.mil/banner/article.cfm?id=821. [Accessed: 01 August, 2013].