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. You probably work your ...

The forearms are often overlooked in training, but they play a crucial role in grip strength, wrist stability, and overall arm development. Exercise scientist Milo Wolf ranked the best and worst ...

It is what the fitness enthusiasts call a muscle pump. This temporary swelling happens when blood rushes into the working ...

When it comes to building an impressive upper body, most people focus on the biceps, chest, and triceps (you know, the muscles that are most noticeable and turn heads). But the forearms often get ...

YOUR ARM WORKOUTS are, more than likely, focused on two very important muscles: the biceps and triceps. These big muscles take up the front and rear of your upper arms, respectively. They're notable ...

Trainers explain why strength training isn't just for muscles.

A certified trainer shares an 8-minute routine targeting arm flab after 55 — no weights needed to tighten and firm bat wings fast.

SCULPTING A SET of strong, muscular arms is high among the top priorities guys have at the gym. The big arms ideal is often thought to be a purely aesthetic pursuit—and for some trainees, that might ...

Get ready for the ultimate pump.

For fitness purposes we can roughly divide the body into three sections: the lower body (legs), the core (abs), and upper body (everything from the chest up including arms, shoulders, and back—but not ...

Of all the moves that can improve poor posture, arm stretches may be your least likely guess. But it’s all connected. The arms are attached to the shoulders that you slump over your computer while ...

Bed exercises to tighten arms after 55, a CSCS trainer shares 4 joint-friendly moves to firm triceps and shoulders.