Add Yahoo as a preferred source to see more of our stories on Google. For some gym bros, every day is arm day. These guys spend ungodly amounts of time creating and tweaking (then re-creating and ...

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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. Arm day can be one of ...

On the backside of each of your upper arms is an unsung hero. With the right amount of consistent, balanced strength training, you can give it the attention it deserves—and in doing so, stretch the ...

If toning the back of your arms is a goal, strengthening the triceps can help eliminate that common trouble spot that jiggles when you wave and help you feel more confident. But even more important, ...

Your triceps are tiny muscles that are responsible for a major movement. While your biceps help your elbow bend, your triceps, those horseshoe-shaped muscles towards the top of your arm, help 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.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." ON THE BACKSIDE of each of your upper arms is an unsung hero. With the right amount of consistent, ...

Dr. Shields is a physical therapist with a background in English Literature and a passion for healthcare and education. She hopes to combine her clinical expertise with her love of writing, establish ...

Grab those laundry jugs or your weights Robbie Raugh shows us some exercises for your triceps. The triceps are the back part of your arm; the upper back part of your arm and it’s the pushing muscle.

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 ...