James Nestor's book (translated in Spanish as Respira ) has become a global bestseller by arguing that modern humans have lost the fundamental ability to breathe correctly. Nestor, a science journalist, combines historical research with extreme self-experimentation to show how simple breathing adjustments can drastically improve physical and mental health. Core Concepts of "Respira"
Mouth breathing is linked to higher stress levels, hypertension, and sleep apnea.
If you are unable to obtain the full book, here are evidence-based exercises Nestor promotes (though the book contains much more nuance):
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