“There is something called R on T phenomenon. I won’t get into EKGs or anything, but basically if your heart beats at the wrong time in your normal cycle, you can go into cardiac arrest.
This was seen with that NFL football player who had a sudden collapse on the field a year or two back. That sudden beat that occurs can also result from a sudden hit to the chest such as a baseball hitting you square in the chest at the wrong time in your heart cycle.”
It only helps to a degree. Takes only 1 idiot to speed through a red light and it's over.
I also don't tail gate; look both ways when crossing a one way street; check that there aren't any cars coming if I'm about to walk past a big rain puddle, etcetera etcetera.