There are two kinds of movement: coordinating movement and gestural movement.
Coordinating movement happens first, when you let your head move delicately forward and up from the top of your spine, and let your whole body follow.
Gestural movement happens next. It’s what people commonly call “movement”—taking a step, waving to a friend, picking something up.
Note that the first movement we make is always a coordinating movement: either for easy, natural coordination (when our head leads delicately) or in a mal-coordinated way, when we tighten our neck and pull our head back and down. So you might as well start well-coordinated whatever you do!