Bhastrika

Forceful inhales and exhales through the nose, both halves equally active, driven from the diaphragm: like a bellows.

Stronger than kapalabhati. More effort, more effect.

When you need real energy, not just a nudge.

Rounds 0 = infinite

In other words

Pump the lungs like an accordion: equal force pulling them open and squeezing them shut, over and over.

Benefits

A strong release of adrenaline and dopamine
Raises core body temperature
Builds respiratory power and capacity

When to be careful

Avoid if pregnant or within a few months of abdominal surgery.
Avoid with uncontrolled high blood pressure, heart disease, epilepsy, a hernia, or a panic disorder. The forceful pace can intensify anxiety symptoms in some people.
Avoid with glaucoma or a history of detached retina.
Practise sitting down, never while driving or in water.

The science

Sustained, equal-force breathing at around sixty breaths a minute sharply lowers blood CO2 and drives a surge in sympathetic activity. A 2020 study in the International Journal of Yoga found measurable rises in heart rate, blood pressure, and skin temperature within a single round, alongside increased beta-wave activity on EEG, the signature of focused alertness. It's essentially the body's pre-fight rev.

Origin

Detailed in the Hatha Yoga Pradipika and Gheranda Samhita (fourteenth to seventeenth centuries). 'Bhastrika' is Sanskrit for bellows, describing how the practitioner pumps the lungs the way a blacksmith fans a forge. Traditional yoga uses it as the entry point to advanced pranayama, and to ignite what's called 'inner fire'.

How to

Sit tall, spine long, hands resting on the knees.
Inhale forcefully through the nose, letting the belly expand. Exhale with equal force, drawing the belly in.
Keep the face and shoulders relaxed. Only the diaphragm and belly are working.
Do twenty to thirty breaths at around one per second, then take one long, full inhale and hold for as long as feels comfortable. Exhale slowly. That's one round.

Common mistakes

Heaving the shoulders up and down. The engine is the diaphragm.
Going too fast and losing the equal in-out ratio.
Skipping the long inhale and hold at the end, which is where the effect settles in.

Dosage

One to three rounds of twenty to thirty breaths. Excellent before a breath-retention session or as a warm-up before exercise.

How it compares

Kapalabhati

Bhastrika is the bigger sibling: both halves of the breath are active and forceful. Kapalabhati only powers the exhale, and is faster and lighter.

Tummo

Tummo borrowed Bhastrika's mechanics and added visualisation, plus the famous breath holds, to generate body heat. Bhastrika is the engine; Tummo is the engine plus a route for the heat.