Uhh, what they were saying has nothing at all to do with heart rate. It has to do with the frequency of electrical impulses to the heart muscle. 60 Hz just happens to fall in the range that can affect the delivery of the proper impulses and send you in to fibrillation. > >> [...] When you want to open a UPS pay attention to the Htz. 50-60 Htz >> is the same frequency as the human heart. So, with the right >> frequency you can jump-stop your heart. > > Maybe for the seven dwarves. The average adult human heart beat is > something like 70 to 90 beats per minute. That is, roughly 1.1 to 1.5 > Hertz (the abbreviation is Hz, btw).