Learn more about the impact ultramarathon running has on red blood cells and how it may do more harm than good for the body.

By Dennis Thompson HealthDay ReporterTHURSDAY, Feb. 19, 2026 (HealthDay News) — Ultra-marathon runners must be incredibly fit to endure races that can extend more than 100 miles, but their bodies pay ...

After a long trail race, some of your red blood cells may not bend the way they should. That matters because red blood cells have a tight job description.

The marathon aims to attract world-class runners to the trails of Aroostook County and put the region on an international stage.

Running 170 kilometres over mountainous terrain caused people's red blood cells to accumulate more age-related damage than those of less ambitious athletes ...

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a study published in the American Society of Hematology's journal Blood Red ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have long hypothesized about a theoretical limit to human energy use. Yet elite endurance athletes are constantly ...

Correction: A previous version of this article misattributed quotes from Kevin Mathieu and Timothy Sullivan. Sure, vomiting is allowed. Discouraged but allowed, according to the bylaws of this ...

Discover what ultramarathon runners eat to run 100 miles. This ultra runner enjoys avocados and bison bars, and follows a ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. BUTTE — In 2020, Wes Plate was like many other Americans during COVID who were itching to get out ...

Comfort is king when it comes to ultra trail running shoes. These are the shoes you should be able to rely on over long and arduous miles. The right shoe should make you feel like you can keep going ...