After vomiting , I sometimes find myself completely unable to breath for 5-10 seconds. It is as if the airway has constricted to the point of complete closure. After the initial 5-10 seconds, this constriction lessens and I slowly regain the ability to breathe. I do not have any known medical afflictions, and there is no use of any substance ( i.e. anaesthesia, alcohol, etc. ) when this occurs.