Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Curls are the classic ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." NO ARM DAY WORKOUT is complete without a solid biceps pump. The big arm muscles are one of the most ...

SCULPTING A SET of strong, muscular arms is high among the top priorities guys have at the gym. The big arms ideal is often thought to be a purely aesthetic pursuit—and for some trainees, that might ...

Superhuman Troy explains the science of biceps with a research-backed workout to add 1-2 inches.

The arm extends from the shoulder to the wrist, including the upper arm and forearm. Different muscles may work together in intricate ways to help the arm, wrists, fingers, and hands function. Knowing ...

Dumbbell curls, incline curls, cable curls, preacher curls, barbell curls—most guys’ biceps workouts are pretty redundant, boring, and, most important, ineffective. “For growing size, curls come up ...

Building your upper body strength can be a great place to start your strength training journey using several simple exercises. Strength training requires little time, minimal equipment and is safe, ...