Jenny McCoy
Contributing Writer
Jenny is a Boulder, Colorado-based health and fitness journalist. She’s been freelancing for Runner’s World since 2015 and especially loves to write human interest profiles, in-depth service pieces and stories that explore the intersection of exercise and mental health. Her work has also been published by SELF, Men’s Journal, and Condé Nast Traveler, among other outlets. When she’s not running or writing, Jenny enjoys coaching youth swimming, rereading Harry Potter, and buying too many houseplants.
How to treat tight calves for better running
The curveball? Stretching might not be the best solution for you
How to build stamina – and why it matters for runners
Experts explain the difference between stamina and endurance and share the best stamina-boosting workouts to add to your schedule
Shoulder pain while running? Here’s why it happens – and what to do about it
Expert advice for identifying, alleviating and preventing the most common causes of this pesky issue
9 signs your running shoes aren’t working for you
What to look out for when it comes to your shoes, including obvious and subtle cues you should probably get a new pair
Does running volume really matter?
Running coaches explain how to optimise this aspect of your training – and the benefits you can expect to see when you do so
Stairmaster vs treadmill: How these cardio machines compare
While running outdoors is likely your preferred choice, here’s how these classic gym tools stack up
Cardio recovery rate: Why it matters for runners
All you need to know about this underrated fitness metric – and what you can do to improve yours
The B12 deficiency symptoms every runner should look out for
Three experts explain what to look for and how to correct low stores of this B vitamin.
Mais Abousy just became the first known woman to complete an indoor Ironman-distance triathlon
That’s 80 laps in the pool, 112 miles on a stationary bike, and 26.2 miles on a treadmill!
Chris Nikic is the first ironman finisher with Down Syndrome
The 21-year-old is shattering expectations while chasing his goal.