Don't Judge a Runner's Efficiency by Their Stride
A new study asked coaches to rank the most economical runners after watching video footage. It didn't go well.
Health
Time-Crunched? Try This 10-Minute Workout
This three-move bodyweight routine is all you need to improve athletic ability
The Eternal Magic of New York's Van Cortlandt Park
When cross-country season rolls around, there's no place like Vanny
The Myth of Synchronized Breathing
Experienced runners tend to match their breath and stride patterns, but trying to do it deliberately may backfire
Climber Quinn Brett Shares Her Adaptive Yoga Routine
How the practice continues to comfort the former big-wall climber after a life-changing spinal injury
The Books Our Endurance Expert Loved This Year (So Far)
The disruptions of 2020 mean that there’s an unusually large crop of endurance-related books hitting shelves this fall
Why Did a Virtual Ultra Ban "Black Lives Matter"?
The infamous race director Lazarus Lake and runner Ben Chan disagree on whether the running community is a place for serious debate
Why Altitude Training Helps Some People but Not Others
A new analysis casts doubt on the idea that people are born as "responders" or "non-responders" for training in thin air
Are Period Tracking Apps the Key to Better Performance?
A handful of apps are rebranding the menstrual cycle as a female athlete's untapped superpower. Here's what you need to know about them.
My Chronic Pain Was No Match for This Acupressure Mat
One Outside editor added acupressure to her quiver of remedies for her mild scoliosis. It worked better than she thought it would.
The Enduring Mystery of Muscle Cramps
A new study suggests that strength training is more important than electrolytes for preventing cramps