The VMO is the small teardrop shaped muscle on the medial side of your knee cap. Its role is a patellar stabilization mechanism. It’s what the rotator cuff is to the shoulder joint. If you experience knee pain, it could be very possible your VMO is sleeping…wake it up by watching my program for VMO activation and training. This has helped hundreds of mt clients decrease knee instability brought on by poor exercise programing, and the lack of not knowing what to do!