Heart Rate

So my office has a little "Health Station" where we can upload out KAM (what our pedometers are called) data, get weighed, take your blood pressure, and some other stuff. When it takes your blood pressure, it also gets your heart rate. According to the Health Station, an average heart rate is between 50 and 90 beats per minute. (I did a quick search online and the three more legit looking sites I checked were saying between 60 and 100 bpm, but whatever.) Anyways, according to this machine my heart rate is usually in the low 50's, but today my heart rate was only 46 bpm. Must be from all of that running I do, huh? Haha, right.