Puraka, rechaka, and kumbhaka are the three phases that make up every breath in the pranayama tradition: puraka is the inhale, rechaka is the exhale, and kumbhaka is the deliberate pause — the retention — held either after the in-breath or the out-breath. Nearly every named pranayama technique, from the simplest calming breath to the most demanding ratio practices in the Hatha Yoga Pradipika, is really just a particular way of assembling these three phases: how long each one lasts, how it’s paced against the others, and whether a pause is inserted at all. Once you can name the phase you’re in, it becomes much easier to understand what any given technique is actually doing to your body — whether you’re reading about a modern tool like 4-7-8 breathing or working through a traditional pranayama sequence.
The Three Phases: Puraka, Rechaka, and Kumbhaka
Puraka is the Sanskrit term for inhalation — drawing breath, and with it prana, into the body. As a standalone practice, Puraka breath trains a slow, complete inhale that fills the lungs from the belly upward, and it has a mildly energizing effect on the nervous system.
Rechaka is the exhale — the release. As a standalone practice, Rechaka breath trains a slow, complete exhale, and because a lengthened exhale is one of the most direct ways to stimulate the vagus nerve, it’s associated with calming and parasympathetic activation.
Kumbhaka is the retention — the conscious suspension of breath that follows either phase. Classical texts treat kumbhaka as the true center of pranayama, with the inhale and exhale serving mainly as the means of arriving at, and departing from, that stillness. The word comes from kumbha, “pot” or “water jar” — the image of the lungs held sealed and full, like a vessel, rather than simply stopped.
Kumbhaka Has Three Faces: Antara, Bahya, and Kevala
Not all retention is the same. Classical Hatha yoga distinguishes three distinct forms.
Antara kumbhaka is retention with the lungs full — the pause after puraka, before rechaka begins. It’s associated with building heat, focus, and alertness, and it’s the retention most beginners meet first.
Bahya kumbhaka is retention with the lungs empty — the pause after rechaka, before the next puraka. It’s generally considered more intense than antara kumbhaka, since holding on empty lungs is physiologically and psychologically more demanding, and it’s traditionally practiced alongside bandhas (energy locks) like uddiyana bandha.
Kevala kumbhaka is different from the other two in kind, not just degree: it’s a spontaneous, effortless cessation of breath said to arise on its own in deep meditative absorption, without any conscious holding at all. It can’t be practiced or forced — it’s described in classical texts as the eventual fruit of sustained pranayama and meditation, not a technique to attempt directly.
Why Ratios Matter: 1:2 and 1:4:2
Once you have puraka, rechaka, and kumbhaka as building blocks, classical pranayama arranges them into named ratios, and the ratio is what gives a technique its character.
1:2 describes an inhale-to-exhale relationship in which the exhale lasts roughly twice as long as the inhale — for example, a count of 4 in and 8 out. There’s no retention at all in this simplest ratio; it’s just rechaka deliberately extended relative to puraka, which is enough on its own to lean the nervous system toward its calmer, parasympathetic state.
1:4:2 is the classical ratio for inhale, retention, and exhale — for instance, inhale for a count of 4, hold for a count of 16, and exhale for a count of 8. This is the proportion the Hatha Yoga Pradipika describes as the mature form of ratio breathing (sahita kumbhaka), and it makes explicit what the simpler 1:2 ratio only implies: that the hold is meant to be the longest phase of the cycle, not an afterthought tacked onto the end of the inhale. In practice almost no one starts at 1:4:2 — practitioners build toward it gradually, often over months, starting from a much gentler hold like 4:4:8 or 4:6:8.
Try It: A Gentle 1:4:2 Practice
- Sit tall in Easy Pose, Lotus Pose, or Staff Pose, spine long and shoulders relaxed.
- Puraka — inhale through the nose for a count of 4, filling the lungs from the belly upward.
- Antara kumbhaka — pause gently at the top for a count of 8 (a fraction of the full 1:4:2 ratio), keeping the chest and throat soft.
- Rechaka — exhale slowly through the nose for a count of 8, letting the breath empty completely.
- Repeat for 5 to 8 rounds, then return to natural breathing and notice the effect before extending the hold on future sessions.
Where the Three Phases Show Up in Techniques You Already Know
Once you can spot puraka, rechaka, and kumbhaka individually, most popular breathing techniques turn out to be specific ratios wearing a different name.
4-7-8 breathing is a 4:7:8 ratio — inhale for 4, retain (antara kumbhaka) for 7, exhale for 8. It isn’t the classical 1:4:2 exactly, but it follows the same underlying logic: a hold noticeably longer than the inhale, followed by an exhale longer still, which is why it’s so effective for winding down before sleep.
Box breathing uses a 4:4:4:4 ratio — inhale, hold with full lungs (antara kumbhaka), exhale, hold with empty lungs (bahya kumbhaka). It’s the only common technique that uses both kinds of retention in the same cycle, which is part of why it feels so stabilizing: the nervous system gets a dose of both the alert, focusing quality of antara kumbhaka and the settling quality of bahya kumbhaka in every round.
Nadi shodhana (alternate nostril breathing) typically pairs each inhale with a brief antara kumbhaka before switching nostrils and exhaling — puraka through one side, a hold, then rechaka through the other. The retention is usually kept short and equal to the other phases, which is part of why nadi shodhana reads as balancing rather than either stimulating or deeply calming.
Safety Notes on Retention
Puraka and rechaka are safe for essentially everyone at any pace. Kumbhaka is the phase that deserves real caution.
- Never force a hold. The moment a retention produces gasping, panic, tunnel vision, or real dizziness, you’ve gone past the useful range — release the breath and return to natural breathing. Classical texts are explicit that ease, not duration, is the measure of progress.
- Skip or minimize retention during pregnancy. Breath holds, especially bahya kumbhaka combined with abdominal locks, are generally not recommended during pregnancy. Puraka and rechaka on their own remain appropriate.
- Be cautious with blood pressure and heart conditions. Breath retention can transiently raise blood pressure and intrathoracic pressure, so anyone with uncontrolled hypertension, a cardiovascular condition, or a history of fainting should check with a doctor before adding kumbhaka to their practice, and should favor gentle, ratio-free breathing like extended rechaka instead.
- Build gradually. Move from short, comfortable holds toward longer ones over weeks, not within a single session, and always let the exhale that follows a hold be at least as unhurried as the hold itself.
Frequently Asked Questions
Which of the three phases matters most? Traditional texts single out kumbhaka as the heart of pranayama, but that’s only true once puraka and rechaka are already steady and unforced — retention is built on top of a controlled inhale and exhale, not a substitute for them.
Can beginners practice kumbhaka at all? Yes, in small doses. A short, comfortable antara kumbhaka of a few seconds, well short of any strain, is a reasonable starting point; bahya kumbhaka and longer ratios like 1:4:2 are better approached later, after puraka and rechaka feel effortless.
Is rechaka pranayama the same as kumbhaka? No — rechaka is simply the exhale, with no pause involved. It’s often confused with retention because a lengthened rechaka is what leads naturally into bahya kumbhaka, but rechaka on its own has no hold at all.
How long should a retention last? There’s no universal count — it depends entirely on the practitioner’s capacity that day. A useful rule of thumb is to hold only as long as the following exhale can remain slow and unhurried; if the hold forces a rushed or gasping rechaka afterward, it was too long.
If you have uncontrolled hypertension, a heart condition, or are pregnant, consult a doctor before practicing breath retention, and favor puraka and rechaka work without kumbhaka in the meantime.
To go deeper into the broader discipline these three phases belong to, see our glossary entry on pranayama, or browse the complete library of breathing techniques to explore other ratio-based practices.
Ready to bring that same steady attention to the physical practice? Try yoga-bits to learn all 68 yoga pose names through an interactive quiz, or explore Easy Pose and Lotus Pose as seated foundations for pranayama practice.