WASHINGTON — If you have ever trained for a long race, you know the feeling of pushing your body a...
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Researchers tracked ultra-runner Joe McConaughey at the 2022 Cocodona 250 ultramarathon to measure how much energy the human body can...
Ultra-endurance athletes triumph over staggering distances and harsh conditions. But one of their toughest foes may be their own metabolic...
Published October 20, 2025 01:37PMBack in 2019, scientists proposed a new theory of endurance. For efforts lasting more than about...
image: Researchers tracked ultra-runner Joe McConaughey at the 2022 Cocodona 250 ultramarathon to measure how much energy the human body can...
Study participant Joe McConaughey en route to a speed record on the Arizona Trail in 2021. Credit: Michael Dillon (CC...
