The arms are one group of muscles you can always rely on to make you look strong, with or without a shirt on. Big, defined ...

Sit on the bench holding a pair of dumbbells, with your shoulders tight and your head up (not resting on the bench pad).

Ask someone to flex, and chances are they’ll strike the classic double-biceps pose. Ask them what the best biceps exercise is, and you’ll probably hear “dumbbell curl.” That's not a bad guess, ...

The biceps muscles, which span the inner and outer arm from your armpit to your elbow, were given their name because they’re each made up of two parts. The name “biceps” translates to “two heads.” ...

There's nothing like a big-time biceps flex—and to achieve a muscle peak you can be proud of, you'll need these biceps exercises. Consider this your permission to flex. What You Need to Know About ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

The most famous technique for building arm muscles is the curl, which increases the size of the biceps. Some trainers, however, make fun of this exercise as “curls for the girls” because men often ...

Either standing or seated, grab a dumbbell in each hand and let your arms hang almost completely straight at your sides, ...

For fitness purposes we can roughly divide the body into three sections: the lower body (legs), the core (abs), and upper ...

A study compared the effectiveness of strength exercises, specifically the bicep curl and dumbbell rowing. Photo: Getty Images/PeopleImages, Getty images / gradyreese; Collage: FITBOOK When it comes ...