Pranayama Breathing Techniques: Types, Effects and Safety

What is prānāyāma? The texts and the practice

The word prāṇāyāma joins two Sanskrit ideas: prāṇa, vital energy or life force, and āyāma, expansion, control or regulation. It is the practice of expanding and regulating our vital energy through conscious breathing. It rests on a simple fact of physiology: the brainstem controls breathing automatically, yet the cerebral cortex can also regulate it voluntarily (Russo et al., 2017).

In Patañjali’s Yoga Sūtras, prāṇāyāma is the fourth of the eight limbs. It comes after posture and prepares the withdrawal of the senses and meditation. Patañjali defines it as the interruption of the movement of inhalation and exhalation, after which the mind becomes fit for concentration (Bryant, 2009).

The named techniques come later. Svātmārāma’s Haṭhayogapradīpikā (15th century) describes alternate nostril breathing as a purification of the nāḍīs, while sama vṛtti and viloma are developments of modern yoga, systematised above all by B. K. S. Iyengar (Mallinson & Singleton, 2017; Iyengar, 1981). In practice, the techniques do not all do the same thing. Some calm, others energise, and others train breath control and focus.

What research shows about pranayama benefits

Carla’s course manual is careful here, and so are we. Many breathing studies are still small or short, and most concern slow breathing. It pays to separate what has been measured from what is preliminary and from what belongs to tradition.

Slow techniques increase heart rate variability, an indicator of parasympathetic activity, and bring small to moderate reductions in stress and anxiety (Zaccaro et al., 2018; Fincham et al., 2023). Fast techniques do the opposite during practice: they activate. Slow breathing is also associated with modest reductions in blood pressure, which can complement medical treatment but never replace it (Chaddha et al., 2019; Garg et al., 2024).

One common belief needs correcting. In healthy people, blood already leaves the lungs almost saturated with oxygen. What slow, full breathing improves is the efficiency of ventilation and the balance of CO2 (Russo et al., 2017).

Measured. Calming effects of slow breathing, small improvements in attention with breath awareness (Sumantry & Stewart, 2021) and possible gains in quality of life for adults with asthma (Santino et al., 2020).

Preliminary. Small studies on single-nostril breathing (Raghuraj & Telles, 2008). Humming raises exhaled nasal nitric oxide about fifteen-fold (Weitzberg & Lundberg, 2002), but what this means for health has not been shown.

Tradition. The flow of prāṇa and the balancing of the nāḍīs and cakras give the practice its meaning in yoga. They are not measured outcomes.

The main types of pranayama: ten techniques

The course teaches ten techniques. The five essential ones suit beginners and daily practice. The five advanced ones are more intense and call for experience and, ideally, supervision. Here each is named with its purpose only; the method belongs to the Pranayama and Breathwork Teacher Training.

Nāḍī Śodhana, alternate nostril breathing. Balances body and mind and calms the nervous system.

Sama Vṛtti, square breathing. Equal phases of the breath that support focus and emotional balance.

Candra Bhedana, lunar breathing. Calming and, in the tradition, cooling; suited to the end of the day.

Bhrāmarī, humming bee breath. A soft humming sound that encourages relaxation and inner silence.

Ānāpānasati, mindfulness of breathing. Observing the natural breath without changing it; a foundation of meditation.

Kapālabhāti, skull shining breath. Energising; in the haṭha texts it is a purification rather than a prāṇāyāma.

Bhastrikā, bellows breath. Vigorous and warming, used to raise energy.

Sūrya Bhedana, solar breathing. Activating and warming, the counterpart of the lunar breath.

Viloma, interrupted breathing. Re-educates breathing patterns and trains breath control.

Kevala Kumbhaka, pure retention. The culmination of practice after years; never forced and not for beginners.

Pranayama safety: general principles

Prāṇāyāma is generally safe when practised without forcing and with gradual progression. The breath is controlled, never forced.

Anyone with high blood pressure, heart or respiratory problems, epilepsy or glaucoma, and anyone who is pregnant or has a psychiatric disorder, should speak to their doctor before starting. Breath retentions alter pressure in the chest, blood pressure and pressure in the eyes (Nivethitha et al., 2021). Kapālabhāti and Bhastrikā are forms of voluntary hyperventilation, with rare reports of lung injury, and need medical clearance for people with these conditions (Cramer et al., 2013).

Know the warning signs. Dizziness, tingling in the hands or around the mouth, blurred vision, palpitations or feeling faint mean you are breathing more than the body needs. Stop and return to natural breathing (Macefield & Burke, 1991).

Never in water or while driving. Retentions and rapid breathing can cause loss of consciousness without warning (Boyd et al., 2015).

Care with anxiety and trauma. Fast techniques and retentions can reactivate symptoms, so they are always optional (Meuret & Ritz, 2010; Justice et al., 2018).

The teacher’s role. A yoga teacher does not diagnose. They ask about health, offer natural breathing as an alternative and refer on when in doubt (Yoga Alliance, 2020).

What you learn in the Pranayama and Breathwork Teacher Training

Reading about prāṇāyāma is not the same as being able to guide it. The course turns the overview above into a method you can practise and teach.

For regular practice alongside the training, the BeYoga Online Studio offers more than 120 online yoga classes with Carla in English, and you can start with a free introductory class.

Each technique, step by step. A sheet for each of the ten techniques with the step-by-step, its own precautions and its benefits, following the guided practices led by Carla.

Preparation and anatomy. Observing before changing the breath, how to sit, the hand mudrās, and the anatomy of the diaphragm, lungs and nervous system, including how to correct inefficient breathing patterns.

Contraindications and adaptations. What changes in the way you lead for different health conditions, and when to offer natural breathing or refer someone on.

Structuring and guiding a class. A six-phase class structure, sequencing from simple to demanding, guiding attention to each student’s experience, and adapting prāṇāyāma for yoga, meditation, sport and daily life.

Format and certification. Online and self-paced, 10 hours in English, with Carla’s own voice translated with AI and reviewed by the BeYoga team. A video in each unit, eight guided practices, an interactive manual and a PDF workbook. A final exam with 80% or more, the certificate issued in the course right after it, and 10 hours of Yoga Alliance continuing education from a YACEP. 175 euros, with 4 months of access.