suddenly, they're gone

so many unexpected deaths. young, healthy individuals living their lives as per normal, suddenly collapse and died. with no known heart problems. but they died of heart attacks nonetheless. WHY!?!?! so scary. i wonder why noone is affected by such news. don't you wonder, who around you, or even yourself, might be the next one? no symptoms, no precuring health issues also can happen. CHOI CHOI CHOI!! but still... it gets me thinking. and i can't help but worry