Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. New perk: Easily find new routes ...

Altitude sickness, or mountain sickness, as it’s sometimes called, is what happens when you go up in elevation too quickly causing your body to prioritize what needs the air most. Common symptoms ...

Swollen ankles, also known as edema, are brought about by the buildup of fluid around the ankles, feet and legs. Most of the time, swollen ankles are temporary and not a cause for concern. However, it ...