Here's What Running Marathons Does to Your Body

Lindsey Metrus


It seems that our Instagram and Facebook feeds are always flooded with people who are either training for or have just finished running a marathon. But we've got to hand it to these people, especially since running 21 kilometres straight is definitely no easy feat. Running also seems like a positive "trend" to continue, since it gets your heart pounding, your muscles moving, and your blood flowing. However, running so many miles for such a consistent period of time has us wondering if there are any serious dangers with taking part in marathons. We turned to John Rowley, best-selling author of The Positive Power of Fitness ($15), certified trainer, and ISSA director of wellness.

To find out his take on marathon running, keep scrolling!

To avoid those scary black toenails and to make your runs as comfortable as possible, Rowley suggests changing out your sneakers every 450-700 kilometres. You can also try out some inserts, like Footlogics Sports Orthotics ($40), which help correct fallen arches and flat feet.

What are your tips for low-injury running? Have you found any tricks that work? Please share in the comments!

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