ShredXL Testo portion of the biceps. What muscles are required? With the curl standing with the bar, the brachial biceps and the anterior brachialis are assisted by the long supinatorand the pronator teres. The biceps are the largest of these muscles and constitute the largest mass of the front part of the arm. The biceps consist of two bundles (long portion and short portion). The anterior brachii is located under the biceps, near the elbow. It intervenes strongly in the bending of the elbow, whatever the type of taken adopted...

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