One of my big fears (as amplified by reading this forum) is having a knee injury in training. Obviously, there are certain injuries that happen despite proper preparation and ... at the end of the day "shit happens." But, many of us hate being injured and would like to do what we can to prevent injuries, and that knee and back injuries seem to be the most serious and are quite common. So, I thought I'd post this thing I saw today. Many of these are very common sense oriented, but hopefully they're helpful to people. TMUSCLE.com | 18 Tips for Bulletproof Knees Here is some other stuff I found looking today Knee Popping: The Vastus Medialis Strong muscles stabilize joints. With the knee, having strong and flexible quadriceps and hamstring muscles can prevent minor stresses to the knee from causing significant injury. Preventing Knee Injuries: Strenghtening the Muscles Around the Knee Will Decrease Injury Risk Piriformis Stretch Advanced Piriformis Stretch - How to Stretch the Piriformis Muscle and Open the Hips I personally find that warming up well, yoga, and general stretching before and after class are a huge way to take stress of your joints, but if anyone else has some advice (or possibly exercises to strengthen knees and/or ligaments, etc.) please post them.