Originally Posted by Saracen
That's blood pressure, not heart rate. Though they're related.
I hesitate to point you at Wikipedia, Agent, but there's a pretty decent article that's should give you a starting point for getting your answer -
http://en.wikipedia.org/wiki/Heart_rate
Ah thanks, the chart even has the %ages on it which should be helpful

Not sure how I missed WP.
My heart rate just measured 3 times came out at 54/50/53.