Breath

James Nestor's 2020 book on breathing science — arguing that chronic mouth breathing causes health and structural problems, that nasal breathing has documented health benefits, and that ancient breathing practices (pranayama, Sufi breathing) have a rigorous scientific basis.

Creates the nasal breathing health argument — Breath synthesizes multiple research threads (biomechanical studies on jaw development, respiratory research on nitric oxide, Stanford experiments on mouth vs. nasal breathing) into a coherent argument that modern humans breathe incorrectly and that correction has measurable health benefits.