I was one of the rare and fortunate, fit, healthy, active young 39yr old guys to have a cardiac arrest at the gym and live to tell the story....
Dont smoke, dont drink, dont do drugs, have excellent diet etc.... just cant help bad Genes.
Thats a bummer, my Big Bro just had one for his 50th and the same as you, very lucky to still be here.
All the best
