Methods of use of a nasal insert to support smoking cessation, and methods of use of a nasal insert to reduce or eliminate snoring, and a method of use of a nasal insert to reduce the severity or to eliminate obstructive sleep apnea, and a method of use of a nasal insert to gain smoother, easier breathing through the nose. The nasal insert comprises a body having an inner surface which defines an air passageway surrounded by an outer surface of soft, flexible material. The nasal insert body can have a first portion and a second portion where the outer surface of said nasal insert body is configured to the nasal cavity.
