You’ve probably got an excuse or two tucked in your back pocket for when you really, really , want to skip that run. Sadly, “feeling old” can no longer be one of them.

In May 2025, Juan López García completed a 50-kilometer race in 4 hours, 47 minutes, and 39 seconds at the Spanish Master Championship in Malaga, turning a decade-long world record in the 80+ age category to dust, besting it by nearly 49 minutes. And naturally, that made a few scientists sit up and take notice.

A team of Italian and Spanish scientists invited García into their lab for a battery of tests to figure out exactly what’s going on in his body, and to see if the rest of us mere mortals may be able to replicate his success.…