People can be very athletic and have Advanced cardiac complications of a variety from arteriosclerosis to myopathy to arrhythmia issues and you don’t really know it until it manifest like with this fella Hughes that you linked
I am also one of those people I knew when I was a teenager something was wrong because of unusual fatigue and sensations in my chest but I did not know until I was in my 40s that I had pretty substantial arrhythmia issues and my lower anterior descending artery the Widowmaker was malformed from birth no 25 years later I’m still alive somehow it’s pretty remarkable but sometimes it doesn’t work out like that
And also as people have mentioned here you can take a hit in your sternum which can cause arrhythmia particularly ventricular tachycardia wood could kill you pretty quick I’m afraid it’s just part of athletics especially contact athletics or athletics that are extremely strenuous on the heart like marathon runners
My Minds eye was telling me probably around age 17 maybe even earlier in dreams Something was not quite right
I can remember dreams when I was in grade school where I would feel pressure in my chest and the dream would focus on that like I had been shot or someone threw a spear at me truly fantastical dreams and I would woke up sweating
I suppose it was my mind acting out what was going on in my body from birth I know it sounds pretty weird people
Despite all that I participated in athletics till around age 19 and lead a pretty adventurous strenuous life most would agree until around 40
I had a number of cardiac work ups including at Johns Hopkins were nothing more than routine arrhythmia was discovered although one doctor thought I was a hypochondriac and threaten to do a thallium stress test when I was 25 which ironically would have discovered this or at least something pertaining to this