nasal cycle

The nasal cycle is a natural, physiological process where airflow through the nostrils alternates from one side to the other throughout the day. Typically, one nostril will experience increased airflow while the other has reduced airflow, and this pattern switches every few hours. The cycle is controlled by the autonomic nervous system and helps maintain the health of the nasal passages by allowing each side to periodically rest and recover from continuous airflow and potential environmental irritants. It's a normal occurrence and usually goes unnoticed by most people unless they have nasal congestion or other related issues.