Doctors gave Jim Oldfield a year to live. Today, he's back to training for competitions.
A lifetime of high-demand exercises might enlarge this heart structure—but it's unclear if this is beneficial or harmful.
When swelling and pain sidelined his marathon runs, Wallace Isaac Gaunichaux turned to specialists to uncover and treat a potentially dangerous vein syndrome.
Triathlete Rob Norris is in his mid-70s, with hip replacement surgery in his rear-view mirror. Nothing has slowed his training regimen.
At age 56, Kevin Rupp aims to compete in triathlons as long as his body will let him.
Repetition of extreme athletic activity may cause trouble for men.