3 ms·

Not going to lie: "Naturally we breath out of one nostril at a time" had me looking very confused! I even tried contorting my face to get one of my nostrils to

• kseistrup 6y ago
  If you pay attention, one of the nostrils are likely to be more active (as measured in air flow) at a given time and the active nostril will switch side from time to time, perhaps something like every couple of hours.
  • mcv 6y ago
    I think that just depends on which nostril is the least clogged at that particular time.
    • kseistrup 6y ago
      It mainly depends on which turbinates are more blood filled at a given time. See e.g. https://en.wikipedia.org/wiki/Nasal_cycle https://en.wikipedia.org/wiki/Nasal_cycle