Continued resistance throughout the full-range-of-movement is why you might choose Cable Preacher Curls over EZ Bar Preacher Curls, or Dumbbell Preacher Curls. Most Bicep Curl Machines are set up in a similar way also.
Here's a video demonstration of a drop-set of Cable Preacher Curls to really blast those biceps.
Drop-Set of Cable Preacher Curls
Natural bodybuilding champ Matt Bembridge performing a drop-set of Cable Preacher Curls using Globe Gripz.
"For many, straight bar curls (cables or barbells) proves uncomfortable on the wrists and elbows. Globe Gripz help to avoid discomfort so you can concentrate on getting a great pump!"
For more information on Globe Gripz, visit: Globe Gripz Review.