How is yoga breathing?

The process of breathing in yoga involves, first, a breath of air in the lungs and then removing this air from the lungs. When you receive the air diaphragm (muscular layer between the thorax and peritoneum) is moving downward, thickening to a certain extent. The space between the ribs expands. This creates a small vacuum in the lungs and the air is sucked from the outside to fill the lungs. Exhalation is a passive process and requires no effort. (Flexible diaphragm returns to its original position and makes it easy to flat, forcing inhaled air). During normal quiet breathing at all it takes from 4 to 6 seconds. During this short period of time runs the gas exchange between air, rich with oxygen in the alveoli and blood, rich in carbon dioxide in the capillaries, covering them. Typically, breathing - automatic process that occurs at a rate of 10-15 breaths per minute, and it we do not pay significant attention. This automatic nature of breath is very important for our life, because every cell in our body needs a constant oxygen supply. Brain cells are especially sensitive, and during oxygen starvation within a few minutes, they die and never recovered again. 

Breathing is not always automatic and, unlike the processes of digestion and heart function, we can suppress the respiratory center in the brain and delay our breathing. With cells that controls breathing is generally termed "respiratory center", which is located in the back of the brain known as the medulla oblongata.