IT'S SAFE TO say that building big arms is a primary fitness goal for a lot of guys. Contrary to the popular belief, though, strengthening your arms doesn't mean simply repping out as many biceps ...

While having toned biceps is certainly a flex—literally—that’s not the only muscle you should work on arm day. To build all-around upper-body strength (oh, and gain even more muscle definition in your ...

Tricep exercises may be overlooked in favour of the better known biceps, but they're arguably the most important muscle to train on arm day, as triceps make up two thirds of your upper arm.