I'm Jeremy Shore for LIVESTRONG.COM, and this is exercise for hyper-extension in the arms. Elbow hyperextension may be the result of an imbalance between the agonus and biceps muscle and the antagonist triceps muscle. Performing biceps exercises while placing greater emphasis on the eccentric portion of the movement will assist in preventing hyperextension of the elbows. First begin with a resistance stretch by simply placing the opposite hand over the wrist of the arm being targeted, push down with the hand while resisting with a biceps contraction. Only extend the elbow as long as you can maintain a contraction, then continuing to add resistance with the hand, perform a curl, returning to the starting position. Repeat for eight to twelve repetitions each. Next, perform a biceps curl using dumbbells or cables, making sure to concentrate on the lowering of the weight or the eccentric portion of the exercise. Again stop before the arm is fully extended. This will strengthen the biceps and help bring balance between it and the triceps which will help limit the elbow's tendency to hyper-extend. I'm Jeremy Shore for LIVESTRONG.COM, and this has been exercise for hyperextension in the arms.