Deep breathing can lead to low CO2 levels and this causes reduced body and brain oxygenation. Even though most people believe in goodness of deep breathing: <br />http://www.normalbreathing.com/CO2-deep-breathing-myth.php, it can cause health problems. <br /><br />Deep breathing can be practiced safely if you maintain the same or get increased CO2 levels in the lungs. CO2 is crucial for health since it is a powerful dilator of blood vessels, while overbreathing and deep breathing exercises can cause low CO2 in body cells. <br /><br />In this video, Dr. Artour Rakhimov analyzes main breathing patterns and explains how to notice deep breathing in other people.
