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Bicep Curl Machine. The bicep curl machine is one of the best exercises to help beginners understand the action of the bicep muscle. Using an arm curl machine ensures that your biceps get an intense workout. There are many differe.
Biceps and triceps. The elbow joint lets our forearm move up or down. It is controlled by two muscles, the biceps on the front of the upper arm, and the triceps on the back of the upper arm. The biceps and the triceps are antagonistic muscles. when the biceps muscle contracts, the forearm moves up.when the triceps muscle contracts, the forearm moves down.This solves the problem. To lift the forearm, the biceps contracts and the triceps relaxes.To lower the forearm again, the triceps contracts and the biceps relaxes. In order to see this content you need to have both Javascript enabled and Flash installed. 1  Page. 2  1. 3  2. 4  3. 5  4. 6  5.o lift the forearm, the biceps contracts and the triceps relaxes. To lower the forearm again, the triceps contracts and the biceps relaxes. In order to see this content you need to have both Javascript enabled and Flash installed. 1  Page. 2  1. 3  2. 4  3. 5  4. 6  5.