Airflow through the nasal passages is normally asymmetrical because of alternating changes in nasal resistance in each nostril. The mechanism involves changes in sympathetic tone to the venous erectile tissue of the nasal mucosa; increased sympathetic vasoconstriction causing resistance to fall. This nasal cycle has a periodicity of approximately 2 hours and is found in 80% of the population. The reason for its existence is uncertain. A simple explanation is that it permits one side of the nose to go through a rest period and recover from the minor trauma of conditioning the inspired air. Where science is still raising its shoulders, Yogis apparently have the answer and even an exercise to control the flow: alternate nasal breathing - alternate nostril breathing alternatively stimulates our left and right brain hemispheres, a balanced breathing leading to a balanced mind. https://youtube/watch?v=lBYdF9H8TFE
Posted on: Tue, 09 Sep 2014 17:01:33 +0000
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