09/09/2023
It's been understood for more than a millennium that the body alternates between predominantly using the left and right nostrils to breathe -- in anywhere from 30 minute to 4 hour cycles. This wasn’t verified experimentally until the late 1800’s. At the time, no one really knew what it was for and offered multiple dubious explanations. What has since been learned is that the body does this to help regulate a number of bodily functions and processes. Air taken through the right nostril stimulates the sympathetic nervous system, increasing circulation, cortisol levels, blood pressure, heart rate, etc. Air taken through the left nostril stimulates the parasympathetic nervous system, lowering blood pressure, heart rate, cooling the body and reducing anxiety. And to answer the obvious question, yes -- selectively breathing through one nostril or the other CAN be used therapeutically.