Originally Posted by
Koyote
I suspect you're correct on that. The cycling may have caused the problem to manifest earlier, but there was likely an underlying problem.
And on your theme of "snark aside": I have an in-law relative who, I suspect, has long suffered from exercise bulimia. Obsessive exercising is sometimes (not always) a sign of some emotional issue.
True, if you couple an eating disorder with large amounts of exercise, you can definitely create a heart problem.
My math was wrong, though, he was averaging about 40 miles a day.