Here’s an example. Running an ultra marathon requires endurance, because the goal is to maintain a steady pace for several ...

Hearts of young cyclists show greater exercise-related adaptation, including more left ventricular enlargement and changes on ...

Over the past 15 years, there has been an explosion in fitness fads promoting all sorts of dubious concepts. Perhaps the worst of all is the idea that shorter, high-intensity interval training (HIIT) ...

Use it or lose it, triathletes. Muscles don’t have long-term memory for exercises like running, biking and swimming, a new study suggests. The old adage that once you’ve been in shape, it’s easier to ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. The late Michel Foucault was among ...

From strength training to sleep and recovery, these wearables stood out for turning raw data into useful action.

Even the best athletes in the endurance and strength worlds tend to excel in one area and perform poorly in the other. The tactical athlete must have a solid foundation in both, but does not need to ...

More than half a million people around the world will take part in a Hyrox competition this year, alternating eight kilometres of running with eight workout stations, including sled pulls, sandbag ...

Micah True, legendary ultra-marathoner, died suddenly while on a routine 12-mile training run March 27, 2012. The mythic Caballo Blanco in the best-selling book, Born to Run, True would run as far as ...

Long hikes have a way of revealing everything you forgot to prepare for. The climb that seemed manageable online feels ...

Female endurance athletes commonly reported menopausal symptoms, including several perceived to negatively affect training and performance.