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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When people think of having strong, toned arms, they tend to focus mainly on building biceps—the meatier part of your arms. But the triceps—the three-headed muscles in the back of your arms—are just ...

FEELING STRONG ENOUGH to go sleeveless to show off the big guns is a go-to gym goal. If you're coming up short on your triceps training, however, you're not going to be able to show off even half of ...

We spoke with experts to craft a research-backed blueprint to build sleeve-splitting biceps and triceps ...

Ready to get into the best shape of your life? Get free weekly workouts and no-nonsense training insights delivered straight to your inbox. Sign up here and let the gains begin. IF YOU WANT to blow up ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Popularised by powerlifter Dave Tate, the Tate press is performed while lying supine on a bench. ‘You start with dumbbells held ...

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 ...

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 ...

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 ...