Question about form during hammer curls?

[Smurf the little pea.]

When you do hammer curls do you twist your wrist at the end when you bring it up, or do you keep it so the dumbell part hits your arm?

 

[sysopt]

From the side view it should look like a hammer meaning don't twist it. This puts more emphasis on the bracialis and the bracioradial.

 

[Smurf the little pea.]

Ok that makes sense. Thanks for the answer.