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 ...

Think doing the best bicep exercises is enough to get you jacked arms like The Rock? You’re mistaken. Yes, the biceps may give your arms that nice rounded ‘peak’ in the front of your t-shirt, but it's ...

Flabby arms are often the bane of our lives as we age. But there’s plenty we can do to banish so-called bingo wings, by targeting the triceps. While toned triceps certainly enhance appearance, their ...

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, ...

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 ...

The triceps brachii is a three-headed muscle that plays a critical role in elbow extension, pressing strength, and upper arm development. Its long, lateral, and medial heads each contribute ...

The kick-back has you extend the elbow from a full hip-hinge position, with the same trunk position you'd use when performing a bent-over row. Both of these moves are legit but I've found that I can ...

One of the most important arm muscles is the triceps brachii (the triceps, for short). You use your triceps to extend your arm. It opposes the biceps muscle, which is used to flex the arm. You also ...

If you have a set of dumbbells, you can move through some great tricep exercises. These muscles on the backs of your arms are often overlooked, says trainer John Gardner, but you can easily train them ...

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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, ...