Building your backside at the top of your to-do list for 2025? It can be tempting to skip leg day on the journey to build your biceps, back, and chest. But if you want a well-rounded physique it's ...

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

Most of you know that training your upper body provides endless benefits, from improving your posture to increasing your metabolism. You might think of individually working your arms, shoulders, chest ...

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 ...

A broad, well-defined back is a cornerstone of any well-rounded physique. But that’s not the only reason to pump up your posterior—it’s also a critical way of improving posture, reducing back pain, ...

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 ...

A strong upper body truly makes everyday life a breeze. Consider this: By regularly performing upper-body exercises, carrying an overflowing laundry basket up the stairs or moving your fave armchair ...