

If you pray for bigger biceps, skip the preacher curls. Sounds ironic, but that’s the advice from sports scientists at the Federal University of Rio de Janeiro in Brazil. By attaching electrodes to subjects’ biceps, they found that there was very little muscle activation during the third phase of the preacher curl, from when the elbow is bent 90 degrees to the finish. This is also true for the Scott curl. By their reasoning, the stand-ing biceps curl and the seated incline curl, both of which have a longer range of motion than the preacher curl, are better exercises for developing the biceps brachii.
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