In the fourth century B.C., the Greek philosopher Aristotle laid down some key principles of running form. "Runners run faster if they swing their arms," he wrote. "There is in extending the arms a ...

While running may seem like a total lower body activity, your upper half does still play a role in helping you to become a stronger and more powerful runner. Read on to learn how your arms contribute ...

Mastering the right hand and arm transforms the golf swing - in this video we break down the ultimate technique for timing, ...

New research into human speed suggests that athletes who performed short sprints with their arms closed across their chests were nearly as fast as when they sprinted with their normal arm swing. New ...

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 ...