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Alternate nostril breathing is usually the third or fourth practice a person meets, after learning to watch the breath and to breathe low into the belly. In Sanskrit it is Nadi Shodhan, also written Nadi Shodhana, and the name is generally translated as channel purification. The mechanics take about two minutes to learn: breathe in through one nostril, out through the other, and alternate. Practising it well takes longer, and most of what makes the difference sits in details that short instructions leave out.
What the practice is
You use one hand to close one nostril at a time, so that the breath enters through one side and leaves through the other. A full round has four movements: in through the left, out through the right, in through the right, out through the left. That is one round. You then begin again on the left.
Nothing about the breath itself is unusual. There is no force, no speed, and in the basic version no holding. What changes is that the breath becomes deliberate, and that alternating the sides gives the attention something quiet and repetitive to rest on. Many people find that the second half of a session feels noticeably slower and easier than the first, without having tried to make it so.
Where it comes from, and what that means
In the yogic tradition, nadis are the channels through which prana, the vital breath, is said to move. Nadi Shodhan is described as clearing and balancing those channels, particularly the two associated with the left and right sides of the body. The practice is commonly taught as preparation: something you do before sitting for meditation, or before a longer breathing practice, to settle and even things out.
It is worth being clear about the different kinds of statement in play here. The description above is what the tradition says, and it is useful as a way of understanding why the practice is shaped the way it is. Separately, a great many people report that slow, even, nasal breathing leaves them calmer and more collected, and that is an ordinary observation anyone can test in ten minutes. Claims that go further, about treating a condition or producing a specific clinical outcome, would need evidence of a kind this article is not going to invent. Where the three are mixed together, it becomes hard for a reader to know what they are agreeing to.
Before you begin
Practise on an empty stomach. Early morning suits most people, or any time a couple of hours after eating. Sit somewhere your spine can stay comfortably upright without effort: cross-legged on the floor if that is easy for you, or in a chair with both feet flat on the ground. There is no advantage to the floor if it makes your hips ache and pulls your attention down there.
Breathe only through the nose throughout. If your nose is blocked, this is not the day for it. A cold, hay fever, or a stubbornly congested side will turn the practice into a struggle against your own airway, which is the opposite of the point.
The hand position
The traditional hand shape is Vishnu Mudra. Using the right hand, fold the index and middle fingers gently in towards the palm. That leaves the thumb free to close the right nostril and the ring finger free to close the left, with the little finger resting alongside.
Rest the hand lightly. The job is to seal a nostril, not to press on it, and a heavy hand creates tension that travels up into the shoulder and jaw within a minute or two. If the right arm tires, use the left instead. The left hand rests on the left knee, or in the lap.
One round, step by step
Before the alternating begins, sit for a minute and simply watch your natural breath. Let it slow on its own rather than deciding what it should be. Then:
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Close the right nostril, inhale left
Bring the thumb to the right nostril and seal it. Inhale slowly and smoothly through the left nostril, letting the breath fill without effort.
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Switch, exhale right
Close the left nostril with the ring finger and release the thumb. Exhale slowly through the right nostril, emptying gently and completely.
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Inhale right
Keeping the left nostril closed, inhale through the right, as smooth and quiet as the breath before it.
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Switch, exhale left
Close the right nostril again and release the left. Exhale slowly through the left. That completes one round.
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Close the practice
When you have finished your rounds, lower the hand and return to natural breathing. Sit quietly for a minute and notice how the two sides feel before you get up.
The switch is where beginners rush. Between the end of one exhale and the start of the next inhale there is a moment where the hand moves, and it is easy to hurry it, which makes the following inhale sharper than the one before. Let the hand move at the same speed as the breath.
How many rounds, and for how long
Five slow rounds is a reasonable place to begin, with an even count such as four seconds in and four seconds out. That is roughly two and a half minutes of actual practice, which sounds like very little and is entirely enough to start with.
Add rounds and length gradually, across days and weeks rather than within a single sitting. This is the single most common error: a person has a good first session, concludes that more would be better, and doubles the count the following day. Evenness matters far more than either speed or number. A practice you can repeat tomorrow is worth more than one that impresses you today.
If you would rather follow a structure than decide each morning, the app organises this into levels: a first course keeps the inhale even and lengthens the exhale toward a one-to-two ratio across thirty days, and later levels introduce the holds described below.
The holds, and when to leave them out
Many descriptions of Nadi Shodhan include a retention, a pause after the inhale and sometimes after the exhale as well. Ratios such as four in, four held, eight out are commonly quoted.
Retention is genuinely a different practice, and it deserves to be treated as one rather than as a garnish. A hold that is comfortable is fine. A hold you are gripping to maintain is not: it tightens the throat and the diaphragm, and the breath that follows it is almost always rushed, which undoes the evenness you were building. The traditional advice is blunt and worth keeping. When in doubt, leave it out.
If you do want to add retention, add it slowly, on top of a rhythm you already find easy, and stop adding at the first sign that the breath either side of the hold has become uneven.
Three common difficulties
One nostril is more open than the other. This is normal, and it changes through the day. Work with whatever you have rather than trying to force the narrower side. If one side is completely blocked, practise something else today.
The count keeps slipping. Counting is a scaffold, not the practice. If keeping the count is taking all your attention, shorten it until it is easy again, or drop it and simply make the exhale a little longer than the inhale.
The shoulder aches. Almost always the hand is doing too much. Lighten it, lower the elbow, or switch hands.
What to expect
Most people notice, fairly quickly, that they feel steadier after a few minutes of this than before it, and that a session before sitting down to work or to meditate is not wasted time. That is a modest claim and it is the honest one. The practice is also unusually portable once learned, since it needs nothing but a place to sit and a free hand.
What it will not do is fix a bad night's sleep, replace treatment for anything, or produce an effect you can feel building week on week in the way strength training does. Its value accumulates quietly, through repetition, which is exactly why the traditional instruction is to practise a little and often.
Alternate nostril breathing is gentle, but it is not for every day and every body. If you have a cold or a blocked nose, asthma, a heart or blood-pressure condition, or you are pregnant, check with your doctor and a qualified teacher first, and avoid breath retention unless you are being guided through it. Stop and return to natural breathing if you feel dizzy, faint, or breathless. Our full Health & Safety Disclaimer has the detail.
Practise it with a timer rather than a stopwatch
PanchPrana cues each phase aloud so you can keep your eyes closed and your attention on the breath instead of the count. Nadi Shodhan is one of the 66 techniques whose full guide and practice are free, with no account needed, and four multi-day courses build it from an even rhythm through to full retention.
Common questions
Which hand should I use for alternate nostril breathing?
Traditionally the right, in Vishnu Mudra: index and middle fingers folded into the palm, thumb closing the right nostril and ring finger closing the left. If the right arm tires or is unavailable, the left hand works just as well. The hand is only a valve.
How long should I practise for?
Five rounds at a four-in, four-out count is a sensible start, which is around two and a half minutes. Build toward ten minutes over weeks rather than days. Consistency matters far more than duration, and a short daily practice will take you further than an occasional long one.
Should I hold the breath?
Not at first. Learn the alternating rhythm until it is genuinely easy, then add a short, comfortable pause after the inhale if you want to. If you find yourself gripping to hold it, or the breath afterwards comes in a rush, the hold is too long. When in doubt, leave it out.
Is it better in the morning or the evening?
Either works. Morning, on an empty stomach, is the traditional slot and suits the practice's settling, preparatory character. In the evening it can serve as a wind-down, though if you are specifically trying to sleep, a practice built around a longer exhale is usually a better fit.
Can I practise if one nostril is blocked?
If it is partly blocked, work gently with what you have and do not force the narrow side. If one side is fully blocked, by a cold or hay fever, practise something else that day. Fighting your own airway defeats the purpose.
