'Breathing exercises stop panic attacks and anxiety! This is because breathing and oxygenation are critical to avoiding stress primarily because they keep acidosis away.
Blood tends to be alkaline because the vital combustion taking place in the body are mostly acid in character. Alkalinity of the blood allows chemical processes to move acid from the tissues to discharge points such as the lungs, kidneys and bowels. The concentration of oxygen and carbon gasses from breathing affect the pH of blood, and thereby breathing-rate. When your breathing is out of balance, you may develop shortness of breath known as hyperventilation. Breathing exercises stop panic attacks and anxiety by preventing this process.
Breathing produces over 95% of your energy and drives your nervous system'