Medically reviewed by: PT. Sinduja Dochibatla Your blood pressure tells a lot about your health. It is measured in millimeters of mercury (mm Hg). Knowing the normal and abnormal blood pressure numbers and how to interpret the results, is essential to recognize how healthy you are. In this post, we will introduce you to a blood pressure chart, and an understanding of each category. We will also discuss the importance of monitoring and managing blood pressure.