What is the difference between low and high blood pressure?

2 answers

Check this site.

http://www.vaughns-1-pagers.com/medicine/blood-pressure.htm
This site looks not bad, but I personally not like this blood pressure chart. It hard to understand, and i using mostly bloodpressuremagazine[dot]com to check my blood pressure readings.

It nice what all in one place, like normal blood pressure and hypertension.