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http://www.MuscleHack.com/build-huge-biceps-with-this-unique-exercise For The Full Tutorial
The problem with standing or sitting barbell or dumbbell curls is that the resistance starts to ‘fall off’ the biceps after the mid-point of these exercises.
Therefore, the mid-range area of those movements is where maximum resistance is, NOT in the maximally contracted position where maximum muscle fiber recruitment actually occurs.
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