First aid
Airway – keep a path open for air to go from the mouth to the lungs.  Turning an ill person on their side if they have vomited ("thrown up") may help keep the airway open so they can breathe.  Moving a hurt person can make their injuries worse.  But without an airway, a person cannot breathe and will soon die unless an airway can be re-opened.  A choking person with no airway can be helped with abdominal thrusts, sometimes called the Heimlich maneuver.