The Oxygen Advantage: The Simple, Scientifically Proven Breathing Techniques for a Healthier, Slimmer, Faster, and Fitter You

by Patrick McKeown

Mouth breathing activates the upper chest, involves larger breaths, and may cause reduced oxygen uptake in the arterial blood. It is no wonder that habitual mouth breathers often suffer from poor energy, a lack of concentration, and moodiness. We