There are breath practices I reach for when I need to calm down quickly, and there are breath practices I reach for when I want to feel genuinely balanced, not just less activated but actually clear. Nadi Shodhana is firmly in the second category. It's the practice I come back to before teaching, before a difficult conversation, before meditation, when I want to feel like myself again rather than just less frantic.
It's also one of the oldest and most consistently practised techniques in the yogic tradition, which tells you something. Practices that have survived thousands of years of living human experimentation tend to be the ones that actually work.
What the name Nadi Shodhana means
Nadi Shodhana comes from Sanskrit: nadi meaning channel or flow, and shodhana meaning purification or cleansing. Together: the purification of channels.
In yogic anatomy, the nadis are the subtle channels through which prana, life force, moves through the body. There are said to be thousands of them, but three are considered primary. The central channel, sushumna, runs along the spine. The two flanking it are ida, associated with the left nostril, the lunar, cooling, receptive quality, and pingala, associated with the right nostril, the solar, heating, active quality.
Nadi Shodhana alternates the breath between the left and right nostrils in a specific sequence, with the intention of balancing the flow of prana through ida and pingala and allowing energy to move freely through the central channel. In a balanced state, both hemispheres of the brain are working in harmony, the nervous system is regulated, and the mind settles.
This is the traditional understanding. The physiological research supports something similar in its own terms.
What the research shows
The two nostrils are not simply parallel pathways to the same place. They connect to different branches of the autonomic nervous system, and breathing through each one produces measurably different effects on the brain and body.
Research published in Neurological Sciences and other journals has found that right nostril breathing tends to increase sympathetic nervous system activity, associated with alertness, activation, and energy, while left nostril breathing tends to increase parasympathetic activity, associated with calm, rest, and recovery. Studies have also found that alternate nostril breathing, which engages both, produces measurable synchronisation of activity between the left and right hemispheres of the brain, and significantly reduces heart rate, blood pressure, and markers of anxiety.
A 2011 study in the Journal of Ayurveda and Integrative Medicine found that a regular practice of Nadi Shodhana produced significant improvements in cardiovascular function and reductions in sympathetic nervous system dominance. A 2013 study found improvements in spatial memory and cognitive performance following alternate nostril breathing compared to breath awareness alone.
The science and the tradition are pointing to the same thing: this practice doesn't just calm the nervous system. It balances it.
How to practice Nadi Shodhana
Sit comfortably, spine tall enough that the breath can move freely. Rest the left hand on the left knee. Bring the right hand to the face: (or your dominant hand if you're left-handed) the index and middle fingers rest lightly on the space between the eyebrows or tucked into the palm of your hand, the thumb rests beside the right nostril, and the ring finger rests beside the left nostril. (Or vice versa if left-handed)
Begin by closing the right nostril with the thumb. Inhale slowly and completely through the left nostril.
At the top of the inhale, close the left nostril with the ring finger, release the thumb, and exhale slowly through the right nostril.
Inhale through the right nostril.
At the top of the inhale, close the right nostril with the thumb, release the ring finger, and exhale through the left nostril.
That completes one full round. The pattern is: inhale left, exhale right, inhale right, exhale left.
Start with five to ten rounds and build from there. The breath should be slow, smooth, and controlled throughout. If you feel any strain or breathlessness, return to natural breathing and rest before continuing.
A common addition as the practice develops is to introduce breath retentions, kumbhaka, at the top of each inhale. Hold briefly before switching nostrils. This deepens the effect considerably but is introduced gradually, after the basic pattern is established and comfortable. When this practice of alternative nostril breathing is practised without the kumbhaka, or hold, it's more traditionally referred to as Anuloma Viloma (continuous), although modern-day yoga studios have brought both under the same name of Nadi Shodhana.
What you might notice after practising Nadi Shodhana
The first thing most people notice is how quickly the mind settles. The alternating attention required by the hand position and the nostril switching keeps the mind occupied in a gentle, focused way, without the effort that counting or visualisation sometimes requires. The mind doesn't have much room to run when it's gently occupied with something as specific as this.
The second thing is a quality of internal balance that's genuinely distinct from simple relaxation. It's not so much a slowing down as a levelling. Both sides feel equally present, equally available. If you practice before meditation, you may notice your sit feels quieter and more spacious than usual.
The third thing, over time with regular practice, is that your default state begins to shift. The tendency toward anxious activation, or toward foggy withdrawal, starts to feel less like your baseline and more like a state you can return from. That's the longer-term effect of a regulated, balanced nervous system.
Practice it in the morning before meditation, or in the afternoon when the mind starts to scatter, or in the evening as part of a wind-down. [A wind-down practice for overthinkers →] It takes less than five minutes for a basic round and the effect lasts well beyond those five minutes.
