Amazing! Thanks a lot, @Mezzane for your step-by-step guide to the effects of deep breathing, its applications and how and what are the benefits. We've been suffering from apneas for decades and getting rid of some addictions added to deep breathing made those disappear. If we may add also to this primordial thread that you perfectly developed; Deep breathing benefits all of the vital systems and the digestive system including the stomach highly benefit too from deep breathing, doesn't it?