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Why do I keep getting injured? Do I have bad genes?
For most runners, it’s not their genes that are bad, it’s their training plan.
Some runners do get injured due to genetics. Osteoporosis and osteopenia can lead to stress fractures, for example. Predisposition to osteoarthritis is a factor in knee and hip degeneration. And, speaking as a member of one of the top masters (age 40+) running clubs in America, the physical condition baked into our genetics known as “getting old” can certainly contribute to a pulled hammy or two.
But the reality is that you—and most of the millions of runners who get injured each year—are probably suffering from the more common ailment known as “incorrect training.” Or what I like to call training like an idiot.
Runners often roll their eyes when I suggest they’re training incorrectly. After all, what do I know about the struggles of average runners? I’m a 57-year-old physiological freak who still runs sub-16-minute 5Ks on 80 miles a week of distance, intervals, drills, and more. “You should thank your parents for giving you good genes and bone structure!” wrote a Facebook friend recently. “That’s 90% of the game!”

Maybe. Except that I when ran 80 miles a week back in my 20s, I suffered three stress fractures, Achilles tendinosis, IT band syndrome, medial tibial tendinitis, plantar fasciitis, and etcetera ad nauseum. Same story in my early 40s. Lots of training, lots of injuries.
So either my genes have improved with age—or perhaps I stopped training like an idiot.
Here are five things I’ve adjusted in my training since the injury-plagued days of yore, things I’d suggest you integrate into your own training plan:

When I was younger, I pounded every interval workout, ran distance too fast, and raced every chance I got. In short, I treated every run as if it were an isolated test of my will to persevere. Nowadays, I take 3–4 weeks off every year, then return to running with a week of walking, followed by a couple weeks of walk-jogging, following by the gradual introduction of all the above. I still get injured. We all do. But I’ve now gone two years and counting without so much as post-workout calf soreness.
Need more? A 2015 meta-analysis of 400 running injury studies concluded that “a history of previous injury and of having used orthotics/inserts was associated with an increased risk of running injuries.” Other risks were harder to substantiate. Nothing about bad genes. The authors recommended “customized training and/or specific exercises” to avoid injury. A 2016 study on injuries among half marathoners and marathoners suggested that “interval training on a regular basis may be recommended to marathon runners to reduce the risk of injury.” Again, no endorsement for gene therapy.
Bottom line: Don’t covet better genes; instead, avoid injury by implementing better, smarter, more well-rounded training.