There was one guy, Ryan Shay, who died during an Olympic qualification race due to some heart attack
(I believe he had an enlarged heart
and palpitations.) So, I know doctors aren't infallible. Just would like some other opinions on strenuous exercise and heart palpitations.
By the way, I am a pre-med college student, and I am taking a mini-mester this January where I can shadow a doctor for three weeks.