Swar Yoga with Swami Neurananda: which nostril is flowing, and what the texts claim
Swami Neurananda
Your Swar Yoga guide
Your breath changes sides all day. Nobody has measured it properly.
The old texts say the active nostril turns roughly every hour, and that the turning follows the lunar day. Modern physiology calls the same thing the nasal cycle and still argues about what drives it. We're asking practitioners to log theirs, and we'll publish what the record shows — including if it disagrees with the texts.
Talk with Swami Neurananda
Which side is flowing?
Breathe out gently through your nose. Which side feels more open?
Left, right or both?
Nothing is saved yet. Next, settle for fifteen seconds and see what the Svarodaya rule expected at this hour.
Observe, assess, adjust
Find which channel is flowing and which tattva is running, check both against the Svarodaya rules, and shift them with the practices the text actually contains. Every instruction below carries its verse and the strength of the evidence behind it.
Namaste. Before we change the breath, let us first come to know it.
- Settle
- Your side
- Time & place
- Result
Which channel is flowing?
Sit for a moment and let the breath settle before you answer.
Sit comfortably and breathe normally.
15 seconds
Not sure? Check it against a mirror
Breathe out onto a cool mirror, or the back of your hand, held just below the nostrils. Compare the two patches of condensation — the larger one marks the open side. Exhaled air is saturated at body temperature and condenses in a pattern set by the geometry of the nasal jet, which changes with congestion.
darpaṇena samālokya tatra śvāsaṃ vinikṣipet
Verse 153 — the only external instrument in the treatise.
Which svara is active?
Go by what you feel, not by what you expect.
Where are you?
The Svarodaya counts the cycle from sunrise, so the comparison needs roughly where you are. The nearest city is close enough.
Kept in this browser to work out your sunrise. If you join the open record, only a rounded version (about 11 km) is shared.
Change the date, time, coordinates or cycle length
Use these to log an observation made earlier, for example on waking.
Choose a city or use your location to continue. Skipping shows your observation without the traditional comparison.
Guided correction
Stop if you feel dizzy, breathless or unwell. No holding, no forcing, no fast breathing in any of these.
Do it at waking
nirīkṣitavyaṃ yatnena sadā pratyūṣakālataḥ
It should be examined carefully every day from daybreak. Verse 149 — the one instruction the source calls the most important practical content in the book, and it is graded E. Waking is the day's largest routine autonomic transition, and a habit anchored to an unavoidable daily event is the only kind that lasts.
One minute, before rising, before any device. Which side is flowing, the rough rate and depth of the breath, one word for the state. Thirty mornings establish a baseline; sixty reveal structure.
Your last two weeks
Nothing yet.
Saved only on this device, never sent anywhere.
The open record
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Read your tattva by observation
Verses 145 to 147 set out eight dimensions and require every phase to take a value on each. Four of them you can measure. Three you can only report. They are kept apart here, and only the measured ones decide the answer — because a scheme that lets the unverifiable borrow credibility from the verifiable will tell you what you already expected.
prathame tattvasaṅkhyānaṃ dvitīye śvāsasandhayaḥ
Pranayama from the text
Every practice here appears in the Svarodaya, with the verse and the strength of evidence beside it. Pick what you need.
Why there is no breath retention here
Ask the text
Answers are passages retrieved from The Respiratory Codex, a commentary on all 313 surviving verses plus its conclusion and safety appendix, with the verse number and evidential grade attached. Nothing is invented — if the book does not address something, you will be told so.
How this tool works, and what it will not tell you
Your observation
What you report after sitting and noticing, plus anything you measure with a mirror or the back of your hand.
Traditional expectation
What the Svarodaya rules predict, with the verse and grade shown for each rule used.
Physiological measurement
None from the camera. A webcam cannot measure nasal airflow, so this tool does not claim to. Sensor mode is reserved for real hardware.
The tool will not tell you to refrain from acting. Verse 64 instructs abstention when observation contradicts expectation, and that rule is unfalsifiable by construction — it reinterprets its own failures as inauspicious conditions, so it can never be wrong. It is shown in the result panel and never acted on. This is a contemplative practice, not medical diagnosis or treatment.
Each morning, before you get up
Which side, how the breath feels, one word for your state (verse 149). No wearable, no subscription, no email needed. Join the open record with two ticks, and ask us to delete your data whenever you like.
Logs this week
Counted live from the open record. It started at zero, and every real observation adds one.
Logs in the record so far
Once there's enough data to mean something, what it shows will be written up plainly in Aṇūṭṭara, including where it disagrees with the texts.
What the texts say each side is for
Traditional guidance, offered as tradition. It's exactly what we're testing — treat it as a hypothesis, not a prescription.
Ida · left
- Study, writing, planning
- Meditation and long sitting
- Water, gentle food
- Setting out on a journey
Pingala · right
- Physical work and exercise
- Digestion, the heavier meal
- Tasks needing drive
- Difficult conversations
Sushumna · both
- Brief — often minutes
- Reserved for sitting
- Not for worldly business
- Marks the change of side
What the evidence says about these lists
The Respiratory Codex grades every verse of the Śiva Svarodaya against current physiology. Its verdict on the lists above: the idea underneath is sound — careful, precise work does go better in a settled state, and effortful work in a mobilised one — but the cause is wrong. Which nostril happens to be open is not what decides it.
Holds up
- The nasal cycle is real and driven by the brain, not the nose. The text described it centuries before Western medicine did in 1895. E
- Lying on one side for five to ten minutes, or pressing a fist under the opposite armpit, will usually open the other nostril. E
- Sleeping on the left side eases reflux, especially after a late meal. E
- Slow breathing, about six breaths a minute with a longer out-breath, calms the nervous system within minutes. E
- Breathing through one nostril to raise or lower arousal: some evidence, not settled. S
Doesn't
- The moon's phase and the day of the week do not change which side flows.
- The breath does not predict outside events: journeys, lost objects, contests, the sex of a child.
- Nasal dominance is not a prognosis. A side that stays blocked has ordinary causes — a deviated septum, polyps, sinusitis — and is a reason to see an ENT doctor.
- The text's death timetables are not just wrong but harmful: they feed health anxiety and fear.
What actually works, according to the book
- Slow breathing with a longer out-breath, three to five minutes
- Breathing through the nose rather than the mouth
- Sleeping on the left side
- The one-minute morning check, recorded before it is interpreted
- A short, fixed routine before demanding tasks
- Precise work in a settled state, effortful work in a mobilised one
- Ten to fifteen minutes of attention to the breath, returning each time it wanders
None of it requires believing in nāḍīs or tattvas.
Before you try the practices
- No breath-holding if you have high blood pressure, a heart rhythm problem, glaucoma or retinal disease, or are pregnant.
- When covering the eyes, touch lightly. Never press on the eyeballs.
- Never gaze at the sun, even briefly.
- Don't tape your mouth for sleep because a text suggests it: it can be dangerous with undiagnosed sleep apnoea or a blocked nose.
- Stop if you feel dizzy, breathless, or get chest discomfort, a headache or changes in vision.
- If reading about signs and omens leaves you checking your body over and over, that urge is the thing to get help with. Health anxiety responds well to treatment.
From Appendix A of The Respiratory Codex. Education, not medical advice.
What the data shows so far
Aggregate only, calculated live. No individual's logs are ever shown here: the chart stays hidden until at least five people have contributed, and any hour with fewer than five logs is left out. Contributing is opt-in, off by default, and you can ask for a copy or deletion of your data at any time.
Dominant swara by hour since sunrise
Loading the record…
The questions we're actually asking
Stated up front, so the answers mean something
- Does the turn really take about an hour? Or does it vary far more than the texts allow?
- Does the tithi predict the sunrise swara? Testable, and either answer is worth printing.
- Does the active side track energy and mood? Self-reported, so treat it gently.
- Do the text's correction practices actually switch the side? Recorded when you observe again after a practice.
What we collect, and what we never will
We ask for the least that makes the record possible. Once you join, you get an anonymous record code. Email it to us to get a copy of your data or have all of it deleted, no reason needed.
Read the full privacy noticeWe collect
Nostril side, time, location rounded to about 11 km, and, only if you choose, mood, energy and calm scores.
We never
Sell it, share it with advertisers, track you across other sites, or collect anything from under-18s.