We take around 20,000 breaths a day and barely notice a single one. Yet breathing is the fastest and most accessible way to change your own state: calming down requires no pills, no free hour, no special place. It takes five minutes and knowing what to do. Here is how it works physiologically, plus three pranayama techniques worth starting with.
What pranayama is
Pranayama is the branch of yoga concerned with controlling the breath. In Sanskrit, "prana" means life energy and "yama" control — or, in another reading, "ayama", expansion. In practice it is a set of techniques in which you deliberately change the length of the inhale and exhale, their ratio, the presence of pauses, and which nostril the air passes through.
Importantly, this is not esoteric. Everything described below is explained by ordinary physiology — which is exactly why it works for everyone, regardless of how they feel about spiritual practice.
Why breathing governs your state
Breathing is the only bodily function that runs automatically yet is fully available to conscious control. That makes it a direct interface to the autonomic nervous system, which otherwise doesn't take instructions.
Inhale speeds up, exhale slows down
Your heart rate rises slightly on the inhale and falls on the exhale. This is called respiratory sinus arrhythmia and is entirely normal. The practical conclusion follows: make the exhale longer than the inhale and the parasympathetic nervous system takes over — the one responsible for recovery, digestion and sleep. Make the inhale longer and the sympathetic system engages: alertness and mobilisation.
The vagus nerve
Slow breathing with a long exhale stimulates the vagus nerve, the main channel of the parasympathetic system. That is why a few minutes of calm breathing noticeably lowers heart rate and eases anxiety.
Carbon dioxide, not oxygen
A common misconception is that stress means "not enough oxygen". In fact blood oxygen saturation is around 98% anyway. The feeling of breathlessness during panic is caused by a drop in carbon dioxide from rapid shallow breathing. Slowing the breath restores the balance and the suffocating feeling recedes.
The diaphragm and the core
Under chronic stress the diaphragm barely works, breathing moves into the upper chest, and the neck and shoulders overload. Restoring diaphragmatic breathing releases that tension and returns support to the lower back at the same time.
Technique 1: Diaphragmatic breathing
What for: the foundation for everything else, lowering cortisol, releasing the neck and shoulders.
Lie on your back, bend your knees, feet on the floor. One palm on the belly, the other on the chest. On the inhale through the nose the belly rises gently while the hand on the chest stays almost still. On the exhale the belly falls. Don't fill up to capacity — breathe calmly and naturally.
How long: five minutes in the morning or before sleep, daily for two weeks. This is the case where a simple exercise gives more than a complicated one.
Beginner's mistake: pushing the belly out with effort. The belly rises because the diaphragm descends, not because you force it.
Technique 2: 4-7-8 breathing
What for: anxiety, insomnia, a moment of acute stress.
Inhale through the nose for 4 counts, hold for 7, exhale slowly through the mouth for 8. The exhale ends up twice as long as the inhale — that ratio is what switches the nervous system into recovery mode. Start with 3–4 cycles and build up to eight.
When to use it: in bed when sleep won't come; before speaking in public; after a difficult conversation. The effect is usually felt by the third cycle.
Caution: in pregnancy, with high blood pressure or during panic attacks, shorten or drop the breath holds entirely and keep only the long exhale.
Technique 3: Nadi Shodhana — alternate nostril breathing
What for: focus, evening out your state, preparing for work or meditation.
Sit comfortably with a straight spine. Close the right nostril with your right thumb and inhale through the left. Close both, brief pause. Open the right and exhale through it. Inhale through the right, pause again, exhale through the left. That is one full cycle.
How long: 5–7 minutes. The breath should stay quiet and even — if tension appears, shorten the pauses.
When to use it: midday when your head is overloaded and you can't focus; before asana practice; instead of a second coffee.
Fitting breath work into an ordinary day
- Morning: five minutes of diaphragmatic breathing right after waking, still in bed.
- Working day: ten slow exhales every time you get up from your desk. It takes a minute and noticeably reduces accumulated tension.
- Commute home: Nadi Shodhana on public transport — invisible to others and effective at switching off work mode.
- Before bed: 4-7-8, four to six cycles.
Don't try to introduce everything at once. Pick one technique and one time of day and stick with it for two weeks — that is enough for the difference to become obvious.
Breath work at Innyoga
We don't run pranayama as a separate class, but it is present in almost every session. In Healthy Back the breath is a working tool: without an engaged diaphragm the lower back has no support. In Vinyasa and Ashtanga movement is synchronised with the breath, which sets the pace. Morning Yoga + Stretching opens with a breathing set-up and closes with a short relaxation.
Learning the technique with a teacher watching is easier than from a text: from the outside it is immediately obvious where you lift your shoulders or hold your breath without noticing. Come to a trial class for 200 Kč at our yoga studio in central Prague, Ve Smečkách 592/22, Nové Město, Praha 1.
Frequently asked questions
Can I do pranayama if I've never practised yoga?
Yes. Diaphragmatic breathing and 4-7-8 require no preparation at all.
Are there contraindications?
Breath holds are not recommended in pregnancy, uncontrolled hypertension, epilepsy, after recent surgery, or during an acute panic attack. Calm breathing with an extended exhale is safe in practically all cases.
How soon will I notice results?
The immediate effect — calming down — takes 2–3 minutes. Changing your baseline anxiety and sleep quality usually takes 2–4 weeks of daily practice.
Should I breathe through the nose or mouth?
Through the nose by default: the air is warmed, humidified and filtered, and nasal resistance slows the breath by itself. The mouth is used only where the technique specifically calls for it — for example on the exhale in 4-7-8.