Grab a dumbbell and sit on a bench with back support. Extend your arm over your head until it is perpendicular to the floor and next to your head. Rotate your wrist so that the dumbbell is pointing to ...

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 ...

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, ...

As the old adage goes, good things always come in threes, so it’s no surprise the most eye-popping muscle in your arms is, in fact, three parts that join together. 'There are three heads to the tricep ...

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 ...

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 ...

Upper arm softness is among the first features people notice when assessing age-related changes. Hormonal shifts, muscle loss, and reduced training intensity combine to soften the triceps and flatten ...