Join a fit and strong blonde athlete during her high-energy upper body workout at Los Campeones Gym. Watch her tackle ...

If you tend to walk right past the cable machine at the gym, listen up. While you can always work your triceps with a set of dumbbells, the cable machine is an excellent way to isolate your arms and ...

Unlike many machines at the gym, the cable pulley has stood the test of time. That's because the cable pulley and cable crossover machines are some of the most versatile pieces of gym equipment, ...

A barbell curl becomes less effective when the hips drive the bar upward and the torso leans backward. A cable curl becomes less effective when the shoulders roll forward, the elbows travel ...

IF YOU’RE LOOKING to blow up your arms, you've got plenty of training tools in your arsenal. You can use hammer curls, preacher curls, and of course, the tried-and-true standing biceps curls. All of ...

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 upper back is an ...