Chandra Bhedana Pranayama: Steps, Benefits and Safety
The left-nostril lunar breath understood through iḍā nāḍī, classical Yoga, modern measurement, individual suitability and Swara Yoga.
What is Chandra Bhedana Pranayama?
Chandra Bhedana is a lunar prāṇāyāma in which the practitioner inhales through the left nostril and releases through the right, traditionally directing attention through iḍā nāḍī. Candra means moon and bhedana means piercing or passing through. It is commonly used to quiet, cool and turn awareness inward. It is not automatically suitable for everyone: lethargy, low blood pressure, coldness, congestion and the purpose of practice must be considered.
Direct answers to common questions
What is Chandra Bhedana pranayama?
Chandra Bhedana is “piercing the moon” breathing: inhaling through the left nostril, the lunar channel (iḍā), and exhaling through the right. It is the mirror of the classical sūrya-bhedana and is taught as cooling and calming. Śiva Svarodaya places the moon in iḍā and the sun in piṅgalā.
How do you do Chandra Bhedana?
Chandra Bhedana is done seated upright: close the right nostril with the thumb, inhale slowly through the left, close both briefly if retention has been taught, then exhale slowly through the right. Repeat for five to ten rounds, keeping the breath comfortable and never forced.
What are the benefits of Chandra Bhedana?
Chandra Bhedana is traditionally used to cool the body, calm the mind and prepare for sleep or meditation. A trial found slow left-nostril breathing lowered blood pressure immediately after practice. The Svarodaya teaches that the lunar flow suits gentle, steady work.
Who should not practise Chandra Bhedana?
People with low blood pressure, low mood or depression, or heavy, sluggish (kapha) states should practise Chandra Bhedana sparingly or not at all, since it is cooling and quieting. In cold weather it is usually reduced. Retention should be omitted in pregnancy and heart disease.
Still have a question about Chandra Bhedana Pranayama? Ask in your own words; a teacher of the Peeth replies.
Chandra Bhedana in brief
- Directional pattern: inhale left, exhale right.
- Energetic orientation: iḍā, lunar receptivity, coolness, inwardness and rest.
- Related but distinct: left-only breathing—inhale and exhale left—is often studied as Chandra Anuloma Viloma.
- Beginner dosage: five unforced rounds without retention.
- May suit: excess heat or outward agitation when no contraindication applies.
- May not suit: marked coldness, dullness, low pressure or heavy congestion.
Meaning and traditional context
The moon in Yoga signifies more than a celestial object. It points to cooling, nourishing, reflective and receptive principles within existence. Iḍā is the lunar nāḍī and is associated with left-nostril flow. Chandra Bhedana deliberately begins through this channel, then completes the circuit through the right.
Classical Haṭha sources do not all give the same list or prominence to Chandra Bhedana. It appears clearly in later practice traditions and is often taught as the complementary method to Surya Bhedana. A responsible page should state that textual history rather than inventing a verse number. The living method remains coherent: direction, dosage, preparation and observation determine its effect.
What the Shastra says
इडायां तु स्थितश्चन्द्रः पिङ्गलायां च भास्करः । सुषुम्ना शम्भुरूपेण शम्भुर्हंसस्वरूपतः ॥
iḍāyāṃ tu sthitaścandraḥ piṅgalāyāṃ ca bhāskaraḥ | suṣumnā śambhurūpeṇa śambhurhaṃsasvarūpataḥ ||
Meaning: The moon abides in iḍā and the sun in piṅgalā; suṣumṇā is in the form of Śambhu (Śiva), and Śambhu has the form of haṃsa.
— Śiva Svarodaya, verse 50 · Sanskrit text: Śiva Svarodaya — sanskritdocuments.org edition, collated with the Swara Yoga Peeth corpus (Muktibodhānanda, Bihar School of Yoga)
Svarodaya’s map behind this practice: the moon in iḍā, the sun in piṅgalā, Śiva in suṣumṇā. Chandra Bhedana deliberately engages the lunar current.
चन्द्रः स्त्री पुरुषः सूर्यश्चन्द्रो गौरोऽसितो रविः । चन्द्रनाडीप्रवाहेण सौम्यकार्याणि कारयेत् ॥
candraḥ strī puruṣaḥ sūryaścandro gauro'sito raviḥ | candranāḍīpravāheṇa saumyakāryāṇi kārayet ||
Meaning: The moon is feminine and the sun masculine; the moon is fair, the sun dark. While the lunar nāḍī flows, gentle and steady works should be done.
— Śiva Svarodaya, verse 60 · Sanskrit text: Śiva Svarodaya — sanskritdocuments.org edition, collated with the Swara Yoga Peeth corpus (Muktibodhānanda, Bihar School of Yoga)
The text describes the lunar flow’s character — gentle, steady, suited to calm work. Breathing through the left nostril invites that quality.
How to practise beginner Chandra Bhedana
- Observe before changing. Note active nostril, temperature, alertness, blood-pressure tendency and mental speed.
- Sit upright. Use a stable chair or meditation seat. Relax the face while keeping the spine awake.
- Place nasika mudra. Use gentle contact; do not press or twist the nose.
- Close the right nostril. Inhale smoothly through the left, stopping before fullness becomes pressure.
- Change sides. Close the left and open the right without holding deliberately.
- Exhale through the right. Let the release be unbroken and comfortable.
- Repeat five rounds. Return to natural breathing and observe Swara, temperature, steadiness and energy.
Advanced teaching may add kumbhaka, ratio, mantra and bandha. These elements can deepen inwardness but also alter cardiovascular and psychological response. They must be adjusted to preparation and health rather than copied from a universal chart.
Where modern science meets this teaching
Single-nostril breathing has measurable, opposite tendencies on blood pressure: slow left-nostril breathing lowered it in one trial, and right-nostril breathing raised it in another.
- Pai et al., International Journal of Yoga 2024 — immediate blood-pressure changes with slow single-nostril and alternate-nostril breathing (randomised, n = 132). Slow left-nostril and alternate-nostril breathing lowered systolic and diastolic pressure right after practice; alternate-nostril breathing lowered mean arterial pressure against control. Limit: Immediate effects in people with normal blood pressure; it does not show long-term change.
- Bargal et al., Indian Journal of Community Medicine 2024 — two weeks of daily right-nostril breathing in 110 healthy young adults. Right-nostril breathing raised systolic and diastolic blood pressure slightly, increased vital capacity and peak flow, and shortened reaction times. Limit: No control group, and healthy young volunteers only; the authors call for studies in people with heart and lung disease.
What the studies did and did not test
These studies measured the nasal cycle or forced one-nostril breathing, and results differ: forced left-nostril breathing raised anxiety in one study (Schiff 1995); in another, forcing did not even change which nostril dominated (Sanders 1994).
Swara Yoga’s claim is different: the flowing nāḍī should match the activity — gentle work in the lunar flow; vigorous work, meals and sleep in the solar (Śiva Svarodaya 60–61, 122):
भुक्तमार्गेण मन्दाग्नौ स्त्रीणां वश्यादिकर्मणि । शयनं सूर्यवाहेन कर्तव्यं सर्वदा बुधैः ॥
No published study matched nostril to activity; each prescribed one nostril for a fixed time, whatever the task, hour, swara or tattva, and none first confirmed the swara had shifted. So their results neither confirm nor refute the Swara principle — our reasoned position, not yet tested.
A crossover study — the same people eating, sleeping or working with the nāḍī matched, then mismatched — would test it. The Peeth invites researchers to run it.
Chandra Bhedana and Swara Yoga
Swara Yoga prevents a lunar technique from becoming a fixed bedtime fashion. If the right Swara is forceful and a person is overheated or mentally overdriven, a small lunar practice may restore proportion. If the left Swara already dominates with coldness, low motivation and mental fog, more lunar influence may be inappropriate.
The fundamental elements are shared while their proportions create different natures. Water nourishes a mango and neem through the same ground, yet their taste, form and action differ. In the same way, one breathing direction can calm one person and make another dull. Yoga applies eternal principles through present observation.
Before and after five rounds, record the active nostril, subjective warmth, agitation and clarity from 0 to 10. A useful outcome is calm alertness. If agitation falls but clarity also collapses, the dose or technique needs correction.
Who should avoid or modify Chandra Bhedana?
Avoid independent practice with pronounced low blood pressure, fainting tendency, hypothermia, severe cold sensitivity, heavy nasal congestion, acute respiratory infection or unusual lethargy. Seek individual guidance with cardiovascular disease, pregnancy, epilepsy, significant asthma, bipolar depression, psychosis or medication that affects pressure and alertness.
Stop for dizziness, breath hunger, headache, chest discomfort, confusion or worsening dullness. Do not force air through an obstructed left nostril. Chandra Bhedana is not emergency care for panic, heat illness, hypertensive crisis or insomnia lasting from an untreated medical condition. Retention and bandha are not beginner requirements.
Common mistakes
- Confusing left-only breathing with left-in/right-out Chandra Bhedana.
- Assuming lunar always means beneficial relaxation. Calm must retain clarity.
- Practising despite low pressure or strong coldness.
- Forcing a blocked nostril instead of addressing obstruction.
- Adding long retention from a video or chart.
- Using the breath to suppress a problem that requires sleep, counselling or medical care.
What is the right next step for you?
Courses suit people who want a steady, step-by-step practice with a teacher, online or at the ashram in Rishikesh. A general course is not the right first step for a specific health condition or an acute crisis; that needs practice prescribed for the person’s state.
Read next: Types of Pranayama
Swami Charanashrit Giri · Swara Yoga Peeth, Rishikesh
Frequently asked questions
Is Chandra Bhedana in the Hatha Yoga Pradipika?
Not by that name. The Pradīpikā lists sūrya-bhedana among its eight kumbhakas, inhaling through the right. Chandra Bhedana reverses it and is taught in later manuals and lineages. Its logic comes from the lunar–solar teaching of Swara Yoga. Teachers who give it usually present it as the lunar counterpart that completes sūrya-bhedana.
When is the best time for Chandra Bhedana?
In hot weather, after exertion, in the evening, or when the mind is agitated or overheated. Swara Yoga suggests noticing if the right (solar) nostril has dominated for a long time — Chandra Bhedana can help restore balance. A few rounds before evening meditation are a common way to use it.
Can Chandra Bhedana help with sleep?
Many practitioners find a few minutes of slow left-nostril breathing before bed calming. Research on this specific use is limited. If insomnia persists, look at its causes — routine, worry, health — and get help suited to them; one breathing practice alone rarely settles it.
How is Chandra Bhedana different from Nadi Shodhana?
Nāḍī-śodhana alternates both nostrils for balance. Chandra Bhedana always inhales left and exhales right, deliberately emphasising the lunar channel. One balances; the other leans towards cooling. A teacher chooses between them by the student’s state. When in doubt, nāḍī-śodhana is the safer default, since it does not push the system in one direction.
Should I hold the breath in Chandra Bhedana?
Beginners should not. Retention can be added later, briefly and with guidance, once the breath is slow and comfortable. Breath holding is avoided with high blood pressure, heart disease, pregnancy and glaucoma. Comfort and steadiness in the breath come first; the length of any hold is the least important part of the practice.
Is Chandra Bhedana good for high blood pressure?
Slow left-nostril breathing lowered blood pressure in a short-term trial, and calming practices are generally suitable when done without retention. Any change in blood-pressure medicine is made with the prescriber against measured readings. People with hypertension should practise gently, without breath holding, and keep their doctor informed. Measuring your own blood pressure before and after a few weeks of practice shows whether it helps you.
Talk to the Peeth about Chandra Bhedana Pranayama
Tell us about your health, your practice and what you are looking for; Swamiji or an Acharya will suggest a path suited to you. Or begin with the free seven-day Swara sheet.
Taught in the lineage of Swami Charanashrit Giri · Swara Yoga Peeth Sansthan, Swargashram, Rishikesh · This page awaits Swamiji’s review · Practice is prescribed for each person, according to their condition.
Understand lunar and solar breathing together
Compare Surya Bhedana and return to the Pranayama guide. Swara Yoga Peeth teaches balance through observation, not automatic opposition.
Sources and further reading
- Patañjali, Yoga Sūtra 2.49–2.50; Swara Yoga Peeth Sanskrit-primary corpus.
- Living Haṭha and Swara Yoga teaching on iḍā, piṅgalā and lunar/solar practice; technique naming checked against the method actually described.
- Shankar N et al. Immediate autonomic changes during right and left nostril breathing. 2022. Acute study, n=20.
- Immediate Hemodynamic Changes during Slow Uninostril and Alternate Nostril Breathing. 2024. Randomised interventional study.