Preacher Curls Vs. Concentration Curls
Concentration curls are one of the best exercises for bringing up your biceps peak, but preacher curls allow you to go much heavier. More weight equals more mass.
Winner: Preacher Curls
Rope Cable Curls Vs. Supinating DB Curls
Rope cable curls are a great isolator. with supinating db curls, the rotation involves muscles in your forearm as well. the more muscles involved, the more mass you build.
Winner: Supinating DB Curls
Double-Cable T-Curls (at a crossover station) Vs. Barbell Curls
The crossover station curls look cool and were a favorite of eight-time Mr. O Ronnie Coleman. But it takes more than that to topple the king of biceps exercises—the barbell curl.
Winner: Barbell Curls