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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 ...

The Best—and Worst—Exercises for Tricep Gains, According to a Trainer originally appeared on Men's Fitness. The triceps brachii is a three-headed muscle that plays a critical role in elbow extension, ...

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 ...

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, ...

When strong, toned arms are a goal, people tend to focus on the biceps. But the triceps are actually the largest muscle in the arm, making them an essential area to target when it comes to ...

Located on the back of the upper arm, the triceps muscles are the powering forces behind the kind of dynamic arms swing that aid in getting you up hills, past “the wall,” and across finish lines.

Biceps tendonitis is generally a chronic injury, where the tendon sheath has become inflamed over a long period of use. As a result, the most important treatment for biceps tendonitis is rest to allow ...

On arms day, triceps exercises tend to get thrown in as an afterthought once you’ve burned out your biceps and shoulders. But though the backs of our arms may not get top billing, that doesn’t mean ...

When strength training to improve performance and sidestep injury, it’s easy to forget about the importance of targeting your upper body. That’s why you want to incorporate these upper body exercises ...