समवृत्ति · 4-4-4-4 · 16s per round

Box Breathing (Sama Vritti)

Equal counts on all four sides — the steadiest place to start

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in 4 · hold 4 · out 4 · hold 4

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What it is

Box breathing gives every part of the breath the same length: inhale for four, hold for four, exhale for four, hold empty for four. Drawn on paper it makes a square, which is where the English name comes from. In the yogic tradition it is sama vritti — "equal fluctuation" — and it is usually the first pranayama a student is given.

The equal count is the entire technique, and that is a feature rather than a limitation. There is nothing to remember mid-practice, no asymmetry to get wrong, and the shape is easy to hold when the mind is agitated enough that anything more complicated would fall apart.

Steadies the nervous system and sharpens focus through perfectly even breaths.

How to do it

  1. Sit comfortably with a straight spine and rest your hands on your knees.
  2. Inhale through your nose for a slow count of 4.
  3. Hold the breath gently for a count of 4.
  4. Exhale through your nose for a count of 4.
  5. Hold with empty lungs for a count of 4, then begin the next round.

When to use it

  • Before something demanding — a conversation you are dreading, a presentation, a difficult email. Four or five rounds is enough to change how you arrive.
  • As the opening minutes of a longer sit, to give attention something structured to hold before you drop the count.
  • Any time the mind is too busy for open awareness. A count is a handrail.

Before you start

  • If the four-count hold feels like strain, shorten every side to three. The counts should be comfortable — sama vritti is about evenness, not capacity.
  • Do not practise breath retention while driving, in water, or standing up.
  • If you are pregnant, or have a cardiovascular, respiratory, or seizure condition, check with your clinician before practising breath retention.

This is general information about a breathing practice, not medical advice.

Common questions

How long should I do box breathing for?
Four to five rounds — about a minute — is enough to settle the nervous system before a stressful moment. For a calming practice, five to ten minutes is a reasonable session. There is little benefit in pushing much beyond that in a single sitting.
Is box breathing the same as sama vritti?
Yes. Sama vritti is the traditional yogic name for equal-ratio breathing; "box breathing" is the modern name for the same 4-4-4-4 pattern, popularised through military and first-responder training.
Should I breathe through my nose or mouth?
Through the nose for both the inhale and the exhale, unless congestion makes that impossible. Nasal breathing slows the airflow on its own, which is part of what makes the pattern calming.
What if I run out of breath before the count ends?
Shorten the count rather than straining. A comfortable 3-3-3-3 does more than a 4-4-4-4 you have to fight for. The lengths matter less than the evenness.