When I was four years old, I was told I shouldn’t play soccer—and definitely shouldn’t run—because of my asthma. Fast forward 30 years, and I’m an elite ultrarunner who runs trails six days a week and lives right next to one of my favorite dirt trails. If you’re just getting into trail running—or...

 Asthma has been with me since day one, and as an elite ultra-athlete with asthma, I’ve faced a barrage of myths about it. This condition touches millions worldwide, yet misconceptions still run rampant—some so convincing they could’ve derailed my journey to soccer fields and ultra-marathon trail...