Add Yahoo as a preferred source to see more of our stories on Google. Man performing dumbbell overhead triceps extension in mirror. Take a look around at your fellow gym-goers next time you visit the ...

Good things always come in threes: fairy godmothers, parts of a combo meal, boy bands made of brothers (Hi Jonas and Hansen!). So it’s no surprise the most eye-popping muscle in your arms is, in fact, ...

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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 ...

Spot training can be really helpful when it comes to certain muscle groups, like your triceps for instance. Triceps tend to be one of those spots that no matter how hard you go on arm day, you just ...

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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 ...