Quick history lesson. Jim Fixx died of a heart attack while on a run, so I can't figure out how he would play into a discussion about runners needing
ecv's later in life. Also, before he started started running, the man was overweight and smoked two packs a day. That might have somewhat contributed to his heart attack. Also, his family had a history of heart disease as evidenced by his father dying in his forties from a heart attack.
If the point is that some people who run wind up in ecv's, then why is this the only point that is brought up? I can think of countless reasons that would be more likely to land someone in an ECV. Number one being obesity, which running easily prevents.
No one ought to be taking a shot at running or runners in a society like ours that has such obesity problems.