Elite athletes can push their bodies to the very limit, but even they can't surpass the boundaries of human nature, according ...

A boundary is emerging for the most seasoned endurance athletes. Beyond apparent performances and records, their bodies seem ...

Even the most elite endurance athletes can’t outrun biology. A new study finds that humans hit a metabolic ceiling at about 2.5 times their resting energy burn. When ultra-runners take on races that ...

Individual athletes ran an average of 4,000 miles over a year to help define the human body's limit for energy expenditure ...

Scientists tracked 14 elite endurance athletes for a year and found a metabolic ceiling: no one sustained more than 2.5× ...

When ultra-runners lace up for races that stretch hundreds of miles and days, they're not merely testing their mental grit ...

With autumn marathons approaching and training intensities peaking, endurance athletes face a critical challenge that extends far beyond physical conditioning. The difference between crossing the ...

Marcel Hug and Susannah Scaroni were the wheelchair champions, Hug for a seventh time and Scaroni for a third. Scott Cacciola ...

Creatine is best known for building strength, but here's what most people don't realize – it's also one of the most underrated tools for supporting your brain.

Q I’ve been an endurance athlete my whole adult life. After having COVID-19, I’ve gone from running marathons at an 8-minute ...