The World's Greatest Arm Curl

Dec 12 / Build Muscle

Ever been told that barbell curl is an "isolation" exercise that only works your biceps? Well, that's just plain wrong. "The barbell curl is actually a phenomenal total-body exercise," says Men's Health fitness adviser David Jack. Do it right, and you'll train your shoulders, upper back, and even your core. To learn all the benefits of this exercise, watch the video above to see Jack explain how to do the barbell curl with perfect form. You might be surprised at all the details you need to know to execute this exercise properly.

And for full-color photos and instructions of 600 more exercises, along with tons of workouts and useful fitness advice, It's the most comprehensive collection of exercises ever created.

LADIES: There's a women's version of the book, too!