A breathing exercise involving rapid abdominal breathing which is carried out to cleanse the respiratory tract; also called "Breath of Fire". This is one of the 6 kriyas, or cleansing exercises.

cleansing breathing exercise that literally means "skull shining"

"The skull cleanser". A pranyama technique in which a rapid pumping of the lower abdomen is synchronized with the breath. Also known as Fire breath. This creates heat in the body, detoxifies and stimulates the digestive system, cleanses the spine and refreshes the mind. An invigorating practice.