A few years ago, I was out doing LSD (Long Slow Distance) running; suddenly I could NOT breathe!
Happened a few more times, I go for a treadmill test.
You sign a form that says “For one in ten thousand the symptoms are SUDDEN DEATH”!
About forty minutes in, every monitor in the place starts flashing ARRHYTHMIA, ARRHYTHMIA, ARRHYTHMIA... lIGHTS ARE BLINKING, ALARMS ARE SOUNDING! The nurse looks very worried!
My Doc ask if I’d keep going until I could not breathe,.
A few minutes and it happened! Before the treadmill returned to a level plane, my Doc ask, how much coffee do you drink?
He says this is the classic symptom of excess caffeine.
Now I only drink a few cups each morning, unlike my past.
Try drinking 3 to 6 cans of Coke a day for years. Your heart will suddenly start racing. I stopped drinking Coke and switched to Diet SunKist and dropped to maybe 2 a day while drinking more water. I also take magnesium and iron and vitamin D. I eat a bag of doritos a week...... and salt my eggs. I feel fine.
The magnesium and iron and vitamin D are what I really needed.
Doritos do not have enough : )