The human body is a wonderous thing, especially when you consider how intricate and efficient each bodily system is. For instance, an adult’s blood vessels could encircle the earth 2.5 times if ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

When Aroldis Chapman began warming up in the bullpen for his first major league appearance in 2010, fans in the outfield seats at Great American Ball Park stormed the area around the Reds’ bullpen ...

Tendons are the small but tough linkers between bones and muscle. When they are injured, repairing a tendon is no small task. Alayna Loiselle, an orthopedics researcher at the University of Rochester ...

De Quervain tenosynovitis is pain and swelling in the tendons around your thumb. Specifically, it affects the tendons of two muscles called abductor pollicis longus and extensor pollicis brevis. De ...

Several muscles could be called the "largest" in the body, depending on whether you're talking mass or surface area, but the body's smallest muscle has no competition. When you purchase through links ...

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 ...

Emotions can cause physical symptoms, such as muscle tension or pain. When these symptoms are persistent, it may feel as though emotions are trapped in the body. While the idea of emotions being ...

Hugh Herr, the director of an M.I.T. laboratory that pursues the “merging of body and machine,” grew up in a Mennonite family outside Lancaster, Pennsylvania. He and his brothers—he was the youngest ...