With youngish people, it's congenital heart defects that cause the heart to stop. Happens all the time, mostly during endurance exercise, e.g. https://www.theg

With youngish people, it's congenital heart defects that cause the heart to stop. Happens all the time, mostly during endurance exercise, e.g. https://www.theguardian.com/sport/2018/apr/09/michael-goolaerts-death-paris-roubaix https://www.theguardian.com/sport/2018/apr/09/michael-goolae...