What Are Concentration Curls? Concentration curls, also known as dumbbell concentration curls, are a variation on traditional biceps curls. Perform concentration curls by sitting on a bench, resting the back of your upper arm against your inner thigh, and lifting a dumbbell.

Are concentration curls better?

Concentration curls

Arguably the most efficient exercise in yielding maximum bicep growth, a recent study by the American Council on Exercise found that the seated concentration curl yielded 97% bicep activity in contrast to EZ-bar curls (wide grip 75%; narrow grip, 71%), incline curls (70%), and preacher curls (69%).

What is the focus of concentration curl?

"The strength of the concentration curl is in how it helps eliminate any excess shifting at the shoulder joint during biceps curls," says Samuel. "When you do standard biceps curls, it's easy (and convenient) to let the elbow shift forward and stop keeping your upper arm perpendicular to the ground.