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 ...

Distance-running plans are chock-full of workouts that improve metrics like VO2 max and lactate threshold to help you run faster for longer. But coach Scott Johnston looks beyond these traditional ...

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

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) ...

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

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. New perk: Easily find new routes ...

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 ...

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

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 ...

Wouldn't it be great if we could slow the aging process? Well, new research shows there may be a way to do so with a specific strategy involving both mental and physical exercise. According to a new ...

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 ...

Women endurance athletes experience a high frequency of menopausal symptoms, some of which are perceived to negatively impact performance.