When most people think of bigger arms, their mind immediately goes to biceps. But here’s the truth seasoned lifters understand: your triceps make up nearly two-thirds of your upper-arm size. If you ...

The triceps — the forgotten halves of the upper arms. You might hear “welcome to the gun show” after a bicep pump, but rarely do you hear a clever quip about the triceps. Nevertheless, they’re ...

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 ...

Building serious arm size takes more than pressing on repeat. To fill out a sleeve and add lockout strength, put the triceps extension in regular rotation. This classic elbow‑extension move is one of ...

Overhead extensions may be a better exercise for building arm muscle than triceps pushdowns. New research suggests that lifting overhead lengthens the muscle for better gains. The study found ...

Triceps are the muscles on the back of your upper limb behind your biceps. They contract every time you bring your hands down. The following exercise is a great way to strengthen and bulk up your ...

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 ...

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To some degree, strength-training exercises targeting the biceps and triceps have gotten a bad rap. In our eagerness to promote a well-rounded view of conditioning that goes beyond the "mirror muscles ...