This is a technigue used by saxophone players usually credited to John Coltrane but actually taught to Trane by Earl Bostic. The key to this is breathing through the nose, not the mouth which is difficult to do playing any wind or brass instrument. Eddie Harris was one of the few trumpet players known to use this techniques and he mastered it as a sax player.
http://www.woodwind.org/clarinet/Study/CircularBreathing.html
Only a small stream is exhaled through the mouth and this is enough to make a few bubbles. If you were a insturmentalist this would be enough for you to play with cheeks extended and allow you to inhale without having to inhale through the mouth.
The point here is that in meditation or yogic practice the same applies in that you lose energy inhaling and exhaling through the mouth and when you do so this energy needs to be controlled/channeled into a constant stream under your control.
Lungs are the electromagnetic conversion chamber. Is is know as the smai twai the divsion where the heru and set fight over u. They meet in the middle of our so lar peluxs any body every wonder why it is called that. It is called that because our heart is the sun of our bodies. Our hears sustains the planets(organs) in our bodies. we are walking duplications of a solar system but on a much smaller scale. WE have unseen electromagnetic energy in our atmosphere. It apperas in an electrofied form of energy the we term oxgen. When they read our bodies in the hospital our heart. gives off an electronic spark that is perceived by the instruments. In my opinion universal electromagnetic matter begins to breathe once it becomes seen. It is called by some hydrogen. However it has no name it is he who is huhi whom has slowed himself down to existence. seperating himself from the female (un seen dark matter) so the can come back together again and form u and me. where the two extremes meet life is created in the form of universal electromagnetic matter that is omipotent,omnipresent until it becomes defined. Atomic exhalation means that the matter is alive and thinking . kind of makes me re think this whole destiny thing! hotep