Don't take it lierally, your heart is not beating that fast of course, it just gets a trigger to do so at 50Hz. This is what we learned when going through the G

Don't take it lierally, your heart is not beating that fast of course, it just gets a trigger to do so at 50Hz. This is what we learned when going through the German TREI training which includes learning about all product and safety norms. Your heart is triggered by weak electrical impulses and what we learned is that these impulses are surprisingly resistant against outside interference, but there is a threshold at which this is not the case anymore. It certainly won't beat 50 times a second (or 60 times for the 60 Hz people), but it will get a signal to do so 50 times a second. What we learned further was that electrical incidents have high variability, some people can die by just touching the wrong wire, some survive lightning strikes twice. A true gamble. I cannot point you at more resources here, all my resources we had are A) German and B) fall under stupid copy right regulations which I think are a crime when we are talking about any kind of norm. "Hey these are the rules you have to adhere to! Just keep in mind to pay us a few grand a year to get the up to date version"