At 43, the five-time Olympian seems indestructible
The effort paradox explains everything from mountain climbing to buying IKEA furniture
Thanks to new equipment and a more holistic approach to training, they turned a dismal 2014 showing into a commanding lead this year
Our columnist literally wrote the book on peak performance, but he had to reconsider everything after an unexpected battle with mental illness
She just made her first national team—after 13 failed attempts
In an era of specialization, a new study argues for diversifying your interests.
Sports psychologists weigh in on the challenges of being among the best in the world
Lest the world suffer my wrath
A cycling study finds that the lure of a reward throws off pacing instincts
Kathrine Switzer on the lessons she's learned after a lifetime of running. Nonrunners, take note.