Neti kriya is a type of yogic nasal cleansing exercise. It is one of six kriyas, or purification techniques also known as shatkarma, that are outlined in the “Hatha Yoga Pradipika.” Neti kriya is designed to purify the nasal passages and bathe the sinuses. The purpose of the kriyas is to keep the body strong, clean and healthy. They are said to remove toxins and anything blocking the flow of prana in the body. The kriyas are believed to prepare the body for yoga practice such as asanas, pranayama and meditation by eliminating physical distractions, discomfort and fatigue. There are two types of neti kriya: Jala neti, which is practiced using a neti pot filled with saline solution to cleanse the nasal passages. In this technique, the head is tilted to the side and then salt water is poured into a nostril and exits through the other nostril. In a more advanced technique, the water is poured into the mouth and snorted out the nose. Sutra neti, in which a thread is passed through the nostrils and out of the mouth. The yogi then holds both ends of the string, pulling it back and forth to cleanse the nose. The thread should be rolled cotton and is often dipped in beeswax for easier threading. A soft rubber catheter may also be used. Sutra neti is said to be a more effective cleansing technique than jala neti.