CrossFit has a copious amount of movements. We squat, clean, press, handstand ... you name it, we do it. Some of the movements we do are simple in a biomechanical sense, but are still very challenging. Consider the basic air squat and deadlift. They are simple by design, but difficult to master. The beauty is that when we start to master the simple movements, they allow us to develop capacity in the more complex movements.