Abductor muscles, including the glute medius, sit on the outer hip and do a job that's easy to underestimate: they stabilize your pelvis and keep your knee tracking in line with your foot every time you squat, lunge, run, or walk. A weak glute medius is one of the most common reasons for knees caving inward under load, a pattern that raises injury risk in the knee over time. Direct training here is straightforward: cable or machine abduction, done for 12 to 20 reps, and banded lateral walks, which combine abductor strength with the kind of stability training a machine can't replicate. Both are low-load, high-rep movements; this isn't a muscle group that needs or benefits from heavy weight. Twice a week is enough, and abductor work fits well as a short activation block before squats or lower-body training rather than as a standalone session. The most common mistake is skipping this muscle group entirely, similar to the adductors, since most standard workout splits don't include it by default. A second is doing abduction work so fast that momentum takes over, which trains almost nothing since the muscle needs controlled tension, not speed, to actually strengthen. A third is ignoring it even after knee pain shows up, when strengthening the abductors is often one of the more effective ways to address knee tracking issues without touching the knee joint directly. Bands and machines are the standard tools, and both work well depending on whether you're training at home or in a gym.