Humans have long practiced breath control, like alternate nostril breathing. This is an ancient technique from yogic traditions. It has been thought to control brain activity and bodily functions. The brain's left and right sides can have different roles, so scientists wanted to see if breathing through one nostril or the other makes a difference in the brain.

Modern science is curious about how nostril breathing impacts the brain. In a study, people with no prior experience in breath techniques breathed through one nostril or the other. The findings?   This type of breathing, called paced nostril breathing, can change the brain's electrical activity.  This activity is called neuronal oscillations. It's basically the brain's way of communicating.

     These changes were measured  with high-density electroencephalography or EEG. This method captures brain activity.  Specifically, it looked at alpha/mu and theta oscillations. These are like different 'channels' the brain uses. Alpha waves are linked to relaxation and focus.  Theta waves are tied to memory, learning, and more.  What did they find? When people took controlled breaths through their nostrils, alpha/mu waves in the central and parietal areas of the brain slowed down. In other words, their brains became more relaxed. At the same time, theta waves in the frontal and occipital areas increased.

Which nostril was used mattered. Breathing through both nostrils in turn, known as alternate nostril breathing, reduced alpha/mu waves more than just using the left nostril.  Researchers found that breathing through one nostril increased alpha waves on the same side of the brain.   This is an "ipsilateral" effect. Left nostril breathing boosted theta waves in the front and back of the brain.  This means our brains communicate between the front and back.  However, heart rate and memory tests didn't change.  This shows that breathing exercises might affect the brain more than the body.

     This study adds to what we know about nasal breathing.  It shows that when combined with slow breathing, using the nostrils can change brain signals. This isn't just some old wive's tale or yoga myth. It's science.   There's a link between our nasal pathways and brain activity. The study proves it.

Breathing Through Your Brain:Ancient Techniques & Modern Findings

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