So I'm not alone! I've been head rolling since birth, Drs told my parents it was Shaken Baby Syndrome even though i was shaking myself. Did it awake and while sleeping. As a child i didn't need music but as an adult i prefer it. I'm 30 and I still thoroughly enjoy it. I day dream while doing so, its an escape. If I'm single I'll head roll daily. Being in a relationship helps because there's no way I'd risk getting caught by a significant other. Happy to know there's others like myself!