Jal Neti (or Jala Neti) is a traditional yogic nasal cleansing practice using a Neti pot with lukewarm salt water to flush out mucus, allergens, and pollutants, promoting clear breathing and respiratory health, benefiting sinus issues, asthma, and fatigue. It involves pouring saline water into one nostril and letting it flow out the other, requiring sterile water, proper salt balance, and gentle blowing afterward; it's part of Hatha Yoga's purification techniques (Shatkarmas) for overall balance.