Nose breathing promotes breathing through the abdominal and prevents you from over breathing. When you breath through your mouth you are taking it roughly 2 to 3 times more air then you actually need into your body. Why is that a problem? Because it's like you are constantly in a state of hyper ventilating, which can cause issues like anxiety and lots of other health issues. While in a resting state and while exercising, you should maintain breathing through the nose, shallow, deep breaths in and out.
“During periods of rest the standard breathing volume for a healthy person is between 4 and 6 liters of air per minute, which results in almost complete oxygen saturation of 95 to 99 percent.” “Increasing oxygen saturation to 100 percent has no additional benefits.”
