Why overdoing extreme endurance running might not be good for you - Scientists provide proof that ultramarathon athletes’ red blood cells become less flexible after a long race, potentially reducing t ...

Sébastien Foucan is built like a soccer player, possessing the kind of physique that falls somewhere between a meaty-thighed sprinter and a sinewy marathoner. The Frenchman keeps his hair shaved close ...

Running is good for your health, but pushing it too far can take a hidden toll. New research shows that ultramarathons may ...