If you want to be able to lift any type of load, from luggage to your kids, you'll need healthy flexion. Your biceps also supinate the forearm (turns it to face upward). And when you train your ...

(U.S. Air Force photo by Tech. Sgt. Joseph Swafford Jr./Released) There's no denying that when you look around the gym, most guys are working their biceps, flexing in the wall mirrors as they walk ...

That's especially true when it comes to training your big arm muscles with biceps curls. The biceps are not overly complicated muscles. They have two jobs: flex the elbow, and twist (supinate ...

That's especially true when it comes to training your big arm muscles with biceps curls. The biceps are not overly ...