We have all heard this simple saying during times of trouble: “Take a deep breath in.” Science being science, however, indicates that we may now have to update this old adage to read “Take a deep breath in it will help you be more emotionally aware but only if you inhale specifically through your nostrils and not your mouth—good luck.”
While this may seem a lengthy tip to recall in the midst of uh-oh moments, the power of active breathing—voluntarily inhaling and exhaling to control our breathing rhythm—has been known and used throughout history. Even today, in tactical situations by soldiers, or in extreme cold conditions by the Ice Man, we know that slow, deep breathing can calm the nervous system by reducing our heart rate and activating the parasympathetic (calming) nervous system. In this way, our bodies become calm, and our minds also quieten. Recently, however, a new study has found evidence to show that there is actually a direct link between nasal breathing and our cognitive functions.