Learn how to do the machine cable fly with proper form to build chest muscle and keep constant tension on your pecs.

THE CHEST IS a muscle group that takes up a great deal of attention for physique-minded guys. If you pause a moment to think about why, you won't need long to figure out the appeal of chest-pumping ...

Get ready for the ultimate pump.

Add Yahoo as a preferred source to see more of our stories on Google. But, you're here for arms, so let's give you what you're after. Behold, 15 of the best biceps workouts guaranteed to stimulate new ...

When strength training to improve performance and sidestep injury, it’s easy to forget about the importance of targeting your upper body. That’s why you want to incorporate these upper body exercises ...

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. The major muscle in ...

Are you looking to grow your biceps but only have access to a cable machine? As a personal trainer, I have created numerous programs for people who needed to prioritize the cable machine, and I can ...

They might feel good when you’re repping them out, but crushing curl after curl after curl just isn’t enough if you’re serious about building sleeve-busting arms. Sorry to be the bearer of bad news, ...

Dwayne Johnson may forever be known as "The Rock," but he works hard to earn the nickname every day. This weekend, the "Black Adam" star hit up his private gym (known as the "Iron Paradise") for a ...

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. We’re going to start ...

You don’t need a pricey gym membership or a set of weights to start building upper-body strength—just your own body. Whether you're tight on time, space, or equipment, bodyweight arm exercises offer a ...