That hero is your triceps muscle, and it accounts for two-thirds of your upper arms’ mass without taking the same amount of ...

Get step-by-step instructions for shoulder exercises targeting the deltoid to improve shoulder stability, increase strength, and build muscle mass.

Lie with your stomach on an incline bench, holding dumbbells or a curl bar with your arms straight below your shoulders. Drop the weight down low and really focus on the eccentric (lowering) portion ...

(Mass Appeal) – Beginning as early as our 30s, we gradually lose muscle mass and this loss can make arms appear softer and less toned. Working out with weights helps tone our muscles, while improving ...

There's no doubt about it, when it comes to building muscle, nothing adds mass quite like lifting heavy. However, there's a limit to how much you can do. While gym newbies and roid heads swear even ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." FROM THE MOMENT that many guys pick up a weight for the first time, their primary goal is to build our ...

Jessica Biel and trainer Ben Bruno break down her full arm and back moves used to prep for 'The Better Sister' ...

While most popular workouts these days aim to focus on abdominals or glutes, many forget that your upper body needs just as much love. Strong and toned arms not only are aesthetically beautiful, but ...