You don't have to be a pretzel or an acrobat. Kundalini Yoga is often defined as the science of angles. For instance, while lying on your back and lifting your feet off the ground at various angles you can affect different bodily systems. Breath Of Fire is often used throughout the Kundalini Yoga exercises. Breath Of Fire is a cleansing breath which cleans the blood and releases old toxins from the lungs, mucus lining, blood vessels and cells.
Regular practice expands the lungs quickly.
As you exhale, the air is pushed out by pulling the navel point and abdomen towards the spine.