Easier on the wrists, same brutal bicep pump.
Keep your elbows fixed and avoid rocking your torso to cheat reps.
The angled grips let your wrists sit partway between palms-up and neutral, taking the joint strain out of straight-bar curling while both arms still share one bar that neither can cheat around. The biceps do all the moving, from a full stretch at the bottom to a hard squeeze at chest height. It is the default mass-building curl for good reason.
The straight bar's fully palms-up grip is slightly more biceps-biased on paper, but the EZ-bar lets most people train harder for longer without wrist or elbow complaints. The bar you can push hard pain free wins.
The inner angled sections are the classic choice and suit most lifters. Moving wider or narrower shifts the feel between the two heads of the biceps slightly, so vary it across training blocks rather than agonising over it.
Brace your core, soften the knees, and pin your elbows to your ribs before the first rep. If the bar still needs a hip bump to move, it is loaded too heavy for your biceps, which is who the set was for.
