Like hamstring tears, the main reason elbow tendonitis is on this list is because it's frustrating. Although you can start to feel better pretty quickly, an important part of recovery is to progress back to your activities slowly. So don't go play a full round of golf as soon as the pain is gone.
The Fix: A good way to keep from getting tendonitis is to steer clear of any heavy lifting where your arms are positioned far away from your body. Exercises like that put too much stress on your elbow and shoulder. Gentle stretching can also help ease elbow pain.