Don Ash, founder of the Craniosacral Therapy Alliance in New Hampshire, discusses the movement of the bones of the head with Charise Rogosky. Physical Therapy Curriculum teaches that after the age of 26 the skull bones don’t move. Don says, “In order to understand the developments of CST you must understand the bones do move”. He goes on to explain that cadaver dissection shows the motion of the movement of the skull. Don has studied the dynamics of craniosacral movement and shows clearly the proof of movement using the skeleton of someone who was about 60 years old. He discusses the dynamics of this movement and the reason it is sometimes disputed.