Marathon running is bad for your heart, there I said it.
It’s been coming across my desk a bit lately, most recently last night reading The Longevity Paradox, that yeah running marathons puts chronic stress on your heart and builds up scar tissue and unreversible calcium deposits. Really I’ve been bummed about it since I heard Micah True died after Born To Run.
To me it means it’s important to recover properly and to take an off season. And it reinforces the spiritual connection between ultra-runners and addicts, like we have to do something that’s killing us to feel alive. In running, like drinking, it’s important to abstain sometimes, do it in moderation most of the time, and have the occasional binge so that too much sanity doesn’t drive you nuts.
As I’m reading more on it you do have to be running a fucking lot and ignoring warning signs for the few people who that runner’s heart really happens to. 15 – 20 miles a week is apparently the sweet spot for running health and that’s a lot of miles as far as the vast majority of people, even runners, are concerned.
What I’m curious about is if you can build up your health with intervals and other cardio to make running quicker to recover from and less damaging acutely. And as I’m wading deep into I found this gem: Favorable left ventricular remodeling and increased left ventricular ejection fraction occurred after HIIT …which hopefully means I’m right…
I’ll let you know more as I find it, in the meantime pray for Karnazes