This is a Great Test for Good Posture. Poor posture leads to many degenerative problems of the neck causing headaches, neck and shoulder pain, as well as arthritis. I spent many years educating over 55,000 children in Asia where everyone of them had the understanding of Good Posture. Parents and Friends, please share this video with others including your children. Good Posture will preserve your spinal health for many years...God Bless. Dr. Mandell