This video provides information about jala neti, a yogic practice for purifying the nasal cavities using lukewarm saline water, and its physiological effects. It does not intend to teach how to perform jala neti, as doing so without guidance is not recommended. Jala neti can help cure issues like sinusitis, eye disorders, throat infections, and middle ear infections by directly and indirectly affecting the visceral organs and major nerves. It can also help relieve sleep apnea, reduce hypertension, cure migraines, and regulate the autonomic nervous system.