RED-S IS A REAL PROBLEM FOR SOME RUNNERS—HERE’S WHAT YOU NEED TO KNOW

Jesse Thomas, now a retired elite triathlete, didn’t always fuel his long runs like a two-time Ironman champion. Years before he won his first triathlon, as a cross-country runner at Stanford University, he’d sometimes go 24 to 48 hours without eating—and still head to practice. if (typeof colombia == 'undefined') { var colombia = colombia || {}; ...