According to the editorial, endurance training and marathon running can literally push your heart to its limit, causing a variety of acute problems, such as arrhythmia or irregular heartbeat, and lasting damage, including calcification and scarring.
Some of these problems are impossible to predict, even if you’re an athlete who has been extensively pre-screened with cardiac tests prior to training. For older athletes, the toll that running takes may even outweigh the benefits gained from exercise, the study claims.
For many, the new information doesn’t add up. Why, for instance, would athletes who have been training for many years suddenly experience heart trouble associated with running?
The answer is simple. Intense physical exercise for long periods has the potential to take a toll on the body, in some cases aging it more quickly.
Yeah, I haven't ran (except from the cops) since I got out of the army in 1981. Fuck that shit. If I need to get somewhere fast, I drive.
There was a running guru back in the 1970s or 80s named Dr. Jim Fixx (I have an incredible memory for names) that died from a heart attack during his daily run which I thought was fucking hilarious.