PrimarySecondaryNot worked
This movement mainly trains biceps, and also recruits Forearms.
In a neutral grip the biceps loses its supination advantage and the brachialis and brachioradialis take a far larger share. Crossing the body also lengthens the useful path.
Ten to fifteen reps per arm. A complement to the standard curl, not a replacement: it works what a supinated grip leaves out.
Rotating the wrist on the way up, which turns it back into an ordinary curl. The neutral grip has to hold end to end, or the brachialis drops back to second place.
The variants REPWIND's catalogue carries, under the name the app shows:
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