Postscript to passing out

I had written this as a postscript to my description of passing out but thought I'd give it its own post as a public service announcement:

Postscript - I had pretty much figured out the physiology of passing out after stopping after climbing the hill but I did some google scholaring to fill in a few blanks and quickly discovered that it is imperative that I go see the doctor to take a battery of tests to rule out a long laundry list of (mostly heart) issues. It is very, very likely to be entirely benign.