[cyborg]

A lot of these long distance runner, aerobic type fanatics don't seem to last long.

[wardaddy]

One can be "fit" yet quite "unhealthy" paradoxically.

I am of course living (Thank You Lord) proof of the genetics factor.

My surgeon says he does surgeries not infrequently on vegans and triathletes.

A nice clot breaks off upstream and blocks one's otherwise fairly clear LAD and it's over....end game. Some folks have apparently benign arrythmias too which for some reason go haywire and lapse into ventricular fibrillation and again....draw the curtains unless very very very lucky.

Life is fickle.....and so are hearts.....cardiologists actually talk about them like they have feelings.....as in "irritable" or "ticklish"...lol

[VadeRetro]

A lot of these long distance runner, aerobic type fanatics don't seem to last long.

George Sheehan (another running guru contemporary with Jim Fixx) died of pancreatic cancer. Somebody said a jogger jogs for his health, but a runner runs even if he thinks it might kill him.

[Skywalk]

Bingo!

After all the research that indicates the more calories you intake, the more you wear out the machine that is your body, I have to wonder about long distance runners. They HAVE to make up, to some degree, for their calorie-burning by ingesting large amounts of calories. Doing that for years on end and all that shock to the body(running) would seem to cut into a long lifespan.

better to do short distance running, weights, etc than be a thin, unhealthy looking 140 lb marathon runner.