Most people slow down after retirement. Juan López García hit the gas. The car mechanic from Toledo, Spain, didn’t lace up ...

This easy test can help you get a gauge on your VO2 max—without a watch. Every day as I peruse through the mountain of ...

Professional triathlete Kristian Blummenfelt registered a mind-bending score.

A new study suggests the world's oxygen-depleted seas may have a chance of returning to higher oxygen concentrations in the ...

Scientists studying ancient ocean fossils found that the Arabian Sea was better oxygenated 16 million years ago, even though ...

By most measures, Norwegian triathlete Kristian Blummenfelt is the standard of peak performance in athletics. He won the gold ...

Run 30 seconds hard at your VO₂ max pace. Follow that with 30 seconds of very easy running (with the short interval, your ...

Triathlete Kristian Blummenfelt’s score puts elite endurance into context ...

The coroner could not definitively rule that the anaphylaxis death of 15-year-old Max McKenzie was preventable, despite ...

The world’s best cross-country skier knows her limits because she explores and pushes them every day.

Microscope image of fossilised plankton called foraminifera which were used in the study. Credit: Anya Hess A new study suggests the world's oxygen ...