Fact: If your upper arm development has stagnated, then hammer-grip curls (palms facing in, not up) can reboot your progress by targeting the often under-developed brachialis muscle. If you've already taken care of that, then here's an exercise from TC Luoma to take it to the next level.
The secret is to allow your arms to straighten out completely at the bottom of the movement. Since you can't recruit the front delts with this exercise and it's impossible to use body english, this is more of a "pure" biceps movement. It'll also help recruit the long head of the biceps, the most neglected head of the muscle group.
Ask Me Anything I receive great questions in my T Nation Community Coaching Lab. If…
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