The biceps muscle flexes your elbow. While climbing, you are constantly pulling and overworking the biceps. This can lead to degeneration of the biceps tendon as it inserts into the bone below your elbow.
The tendons in your fingers are anchored down by pulleys that keep the tendons gliding flush to the bones. Excessive strain on the finger can exerts an outward force on the pulley which may strain or tear it.
The shoulder is made up of four rotator cuff muscles. These muscles connect the shoulder blade to the arm bone. The rotator cuff muscles act together as a unit to control shoulder motion. You need to strengthen the rotator cuff to prevent muscle strain.
This dynamic climbing warm-up was published in DPM issue 25. Photos and video are included in this post. Perform this dynamic 5 minute warm-up before you climb to prevent injury and maximize performance.