As a healthcare professional, I was heavily trained in anatomy, kinesiology, and biomechanics and taught to assess movements/posture and identify dysfunctions/impairments then prescribe corrective exercises to "fix" their problems. Biomechanical ideals are just the average across population, and in reality everyone is so different structurally and functionally. "Average" doesn't mean correct. Similarly below the average doesn't make it wrong either. Who decided human beings should move certain ways?? No other animals learn movements from "experts." I find this very interesting. Babies/kids don't learn movements the same way we adults do. How do babies learn to move? Do they even care about learning movement? They are just curious about the environment and exploring with their mouth and hands. Curiosity drives them to explore lots of different movements so they can reach for a toy and bring it to their mouth. Movements emerge out of these explorations. Adults don't often learn in this manner. One big disadvantage of corrective exercise is that you could potentially eliminate your authentic movements which some experts call "wrong" movements and are forced to "correct" your movements, which may be "wrong." In my opinion, no movements are wrong or right. Even what experts consider ideal movements can be wrong if they're the only movement option available. What's more beneficial is to expand movement options. The nervous system is smart enough to figure out what's best in each situation given it has many options. In my movement education sessions, I guide my students to explore a variety of movement options as opposed to "correcting" their movements.