Breath: The New Science of a Lost Art

James Nestor investigates the biological decline of human breathing and its impact on modern health. He documents how the transition from tough, fibrous diets to processed foods altered human skull structure, resulting in narrowed airways and crooked teeth. Through physiological experiments and historical research, Nestor demonstrates that chronic mouth breathing triggers physical ailments, whereas nasal breathing optimizes carbon dioxide levels and oxygen uptake. He details specific techniques such as the Buteyko method, Tummo, and alternate nostril breathing, explaining how slow, rhythmic exhalations can recalibrate the autonomic nervous system and improve lung capacity.

This book serves individuals managing sleep apnea, asthma, or chronic anxiety who seek physiological interventions beyond standard medication. It appeals to athletes looking to increase endurance through respiratory efficiency and science enthusiasts interested in evolutionary biology. Readers gain a technical understanding of the relationship between the diaphragm and blood pH. They walk away with a toolkit of corrective exercises designed to switch the body from a sympathetic stress state to a parasympathetic state of recovery.

Outward-looking, growth-minded and clear-cut; an easy read.

Best for readers like The Practical Optimizer. Which reader are you?