The straight-bar curl is tough to beat, but cycling between that, dumbbell curls, and EZ bar curls (using both inside and outside grips) helps to keep the guns guessing.

Cable Curl (Straight Bar, EZ-Bar, or Rope) Cables offer constant tension throughout the entire movement, especially at the top, where dumbbells can lose resistance.

The straight-bar curl is tough to beat, but cycling between that, dumbbell curls, and EZ bar curls (using both inside and outside grips) helps to keep the guns guessing.

Here's this week's exercise: Straight bar cable curl: Looking to build upper arm strength? We've got your new go-to move. This cable curl is perfect for challenging your biceps.

Contrast this with a biceps blaster from the Arnold era -- straight-bar curls with 100 total pounds, an extreme weight for most men: 100 x 8 x 3 = 2,400 total pounds.

When choosing a curl bar, there are many things to consider, including the type of plates it accepts, the finish and how heavy the knurling is.

Step 2: Exhale and curl the E-Z bar upward by contracting your biceps. Be sure to keep your upper arms stationary; continue raising the E-Z bar until it reaches shoulder level.

The straight-bar curl is tough to beat, but cycling between that, dumbbell curls, and EZ bar curls (using both inside and outside grips) helps to keep the guns guessing.