Jun 20, 2018
You’re Faster with Friends, Even Uphill
Conventional wisdom says that drafting doesn’t matter when cycling up steep hills. It’s wrong.
Endurance Training
Apr 18, 2018
The Arizona Trail Race Gets a New King and Queen
Kaitlyn Boyle smashed the women's record for the AZT300, while Kurt Refsnider reclaimed the record for the 760-mile AZTR
Apr 10, 2018
Why It Matters How You Think About Pain
Pain psychologists explore the differences between those who finish ultra-endurance races and those who don't
Mar 22, 2018
Sunlight May Be the Next Beet Juice
New research explores how ultraviolet light can trigger the production of health- and performance-boosting nitric oxide
Mar 20, 2018
The Gear Mike Foote Used to Set a Skiing World Record
On Saturday, the pro ultrarunner skinned and skied a combined 61,200 feet in 24 hours, setting a record for the most vert in a single day
Mar 16, 2018
Why Caffeine Might Not Make You Faster
It's the most reliable performance booster in the world—unless you have the wrong genes
Feb 22, 2018
Why Fitness Trackers Should Measure Your Breath Rate
Scientists make the case for a new real-time measure of endurance effort
Feb 16, 2018
Relax, We're Nowhere Near the End of World Records
Athletes have been shattering "expert" forecasts for the ultimate limits of our species for more than a century
Feb 8, 2018
The Outdoor Athlete's Guide to Strong Shoulders
Good fitness is about more than just powerful legs and core
Feb 6, 2018
The Curiously Elastic Limits of Endurance
In an exclusive excerpt from his new book, Outside’s Sweat Science columnist explores the brain’s role in setting our physical limits.
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