A long-running gym debate about whether to train each limb separately comes to the cycling world
In order to achieve his first UTMB win, the American ultrarunning star is taking a whole new approach: rest
It is believed to be the first death in the 19-year history of the Ultra-Trail du Mont-Blanc races in and around Chamonix
Endurance-science experts explain the world record holder’s incredible marathon dominance
Running nerds won’t learn anything new from ‘Kipchoge: The Last Milestone,’ but it’s still a feast for the eyes
Lyme-carrying ticks are a bigger threat than ever. A promising new antibody treatment looks to stop infection—even after a tick bite.
After years of debate on the dangers of “too much exercise,” researchers sum up the state of current knowledge
Electric muscle stimulation claims to be a more efficient form of exercise. Here’s how it holds up.
No runner has ever won the 5,000-meter, 1,500-meter, and 10,000-meter treble at the same Olympics. But there have been other memorable distance triples and doubles.
After losing his father to cancer, a mule deer researcher embarks on a healing migration of his own
Israel Start-Up Nation’s physiologist Paulo Saldhana explains the data—and the feelings—that determine who attacks when in a cycling race
After years of shredding on a screen, our web producer went outside to try the real thing. Plus: a one-month ollie training plan.
What this Olympic moment can teach all of us about mental health
In her new book, ‘The Joy of Sweat,’ Sarah Everts answers all of our writer’s questions about perspiration
The nutrition trend is all over TikTok, and it’s actually not a bad idea
Whether you’re looking to transition from pavement to dirt or just log more and faster miles off-road, Saucony athlete Katie Asmuth has you covered with hard-earned tips and advice
Push too hard when it’s hot outside, and your dog could develop exercise-induced heat-related illness
As events as big as the Olympic Trials get rescheduled because of heat, we went to the science to find out how you should decide when it is too hot to run safely
Starting in 2022, the world-famous ultramarathon will implement a new entrance scheme that aims to bring more women into the race
A step-by-step guide to help you build up to the ultimate lower-body move
What we learn from getting way, way outside our comfort zones
It turns out we have a lot in common