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 ...

I worked out with Jennifer Aniston's pvolve trainer and she led me through her short but challenging 10-Minute Arm Workout ...

Forearms rarely get hidden, so it pays to build them properly ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When time is limited, and you can only spare 45 minutes to an hour for a daily workout, every second counts. The long, sometimes ...

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

Leg day, arm day, ab day—but what about lat day? Lats are the largest muscles in your upper body and the core of any workout routine. Most people use the term lats, but the scientific name for the lat ...

A certified strength coach shares 5 chair exercises that build arm strength after 60—no weights or gym needed.

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. Curls are the classic ...

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 ...