Most people come to yoga through postures. A few come through breath. Almost nobody starts where the classical texts say to start — with cleaning the body from the inside out.
What shatkarma actually means
Shat means six in Sanskrit. Karma means action. So shatkarma is, simply, six actions — six cleansing techniques (shuddhi kriyas) designed to purify the body’s main systems: the respiratory system, the digestive tract, the eyes, and the excretory system.
You may have heard the Hindi equivalent: shat kriyas. Same practices, different word. Karma becomes kriya when you move from Sanskrit to Hindi.
Think of it this way. When you bathe, you remove dead skin and pollutants from the outside of your body. Shatkarma does the equivalent work on the inside. The respiratory passages, the stomach and digestive tract, the nasal canal — these collect their own forms of residue. The classical yogic view is that this internal accumulation makes the body heavy, the breath laboured, and the mind dull. Shatkarma clears it.
The practices are described in two major classical texts: the Gheranda Samhita and the Hatha Pradipika. Both list the same six techniques. They differ only in sequence — specifically in where Nauli and Trataka fall. I’ll return to that difference below.
What the classical texts say
The Gheranda Samhita is the more unambiguous of the two. Maharishi Gheranda places shatkarma as the first of seven limbs of yoga. Before asana. Before pranayama. Before mudra or meditation. The body, he says, must be prepared.
He calls the human body — including the mind — Ghata, a pot or vessel. The preparatory work is Ghata Shuddhi: purification of the vessel. His position is clear:
धौतिर्वस्तिस्तथा नेतिर्लौलिकी त्राटकं तथा । कपालभातिश्चैतानि षट्कर्माणि समाचरेत् ।। (Gheranda Samhita 1/12)
Dhauti, Basti, Neti, Nauli, Trataka, Kapalabhati — these six actions should be practised.
Swami Swatmarama in the Hatha Pradipika takes a more qualified stance. He recommends shatkarma for practitioners who carry excess fat or kapha in the body. For others, he considers them optional. His sequence is:
धौतिर्बस्तिस्तथा नेति: त्राटकं नौलिकं तथा । कपालभातिश्चैतानि षट् कर्माणि प्रचक्षते ।। (Hatha Pradipika 2/22)
Dhauti, Basti, Neti, Trataka, Nauli, Kapalabhati.
The difference between the two texts: in Gheranda Samhita, Nauli comes fourth and Trataka fifth. In Hatha Pradipika, the order reverses. Same six practices, different sequence. Both texts agree on the purpose.
The body is the vessel. Shatkarma is how you prepare it.
Why the body comes first
In teaching, I have seen this pattern many times. A student practices asana regularly for months. Then they learn a single shatkarma — often Jal Neti, the nasal cleansing — and come back the next week saying their pranayama feels different. The breath moves more freely. The practice feels lighter.
That experience is not a coincidence. It is exactly what the texts describe.
The yogic purpose of shatkarma is threefold. First, to bring balance to the three doshas — Vata, Pitta, and Kapha. Second, to regulate the flow of prana in the Ida and Pingala nadis, and from there to support the flow through Sushumna. Third, to provide strength to the body’s internal systems — circulation, digestion, the respiratory system, and immunity.
When the body is carrying unnecessary weight — not fat, but accumulated residue in the tissues and passages — the more subtle practices cannot reach their depth. Asana becomes maintenance rather than preparation. Pranayama meets resistance it shouldn’t have to meet.
This is why Maharishi Gheranda places shatkarma first. Not because the other limbs are less important. Because without the foundation, they cannot do their full work.
The six practices
What follows is a reference overview. These practices are best learned under the direct guidance of a qualified teacher in a proper environment. Written instructions give you the outline. A teacher gives you the adjustments your specific body and capacity require.
Trataka — eye cleansing through concentrated gaze
Trataka is a gazing practice. You place a candle flame at arm’s length and fix your gaze on the tip of the flame without blinking. You hold the gaze until the eyes begin to water. The flowing of tears is part of the cleansing.
Benefits: Improves eyesight and concentration. In teaching, I have seen consistent trataka practice also deepen the capacity for internal focus — which is why it is used as a preparation for meditation.
Contraindications: Not recommended for those experiencing depression or low blood pressure.
Neti — nasal passage cleansing
Neti clears the nasal canal. There are three forms: Jal Neti (water), Sutra Neti (thread), and Ghrit Neti (clarified butter). Jal Neti is the most commonly taught and the most accessible starting point.
In city air — which most of us breathe most of the time — a clean nasal passage is a genuine daily advantage. The breath that reaches the lungs is cleaner. The breathing itself becomes fuller.
Benefits: Clears nasal passages, supports respiratory health, reduces susceptibility to cold and seasonal illness.
Contraindications: The saline solution used in Jal Neti is contraindicated for those with heart conditions. Neti should not be practised during an active cold or flu. Sutra Neti is not suitable when the nose is blocked, when the nasal mucosa is sensitive, or when there is a structural issue with the nasal septum.
Kapalabhati — skull-brightening breath
Kapala means skull. Bhati means shining. The name describes the result: a practice that, over time, brings brightness to the skull — meaning the respiratory system and the spaces behind the face.
Kapalabhati works through active, forceful exhalations followed by passive inhalations. The active exhalation does the work; the inhalation happens on its own. This rhythmic pattern clears residue from the respiratory system and over time increases lung capacity.
Benefits: Cleans the respiratory passages, increases lung capacity, stimulates the abdominal organs.
Contraindications: Not suitable for those with epilepsy, asthma, or high blood pressure. If you have any of these conditions, do not practise without specific guidance from both a qualified yoga teacher and your doctor.
A note on Kapalabhati
Many practitioners learn Kapalabhati as a pranayama technique. The classical texts classify it as a shatkarma — a cleansing practice — rather than a breathing practice. This distinction matters. The intention and the approach differ depending on which framework you are working in.
Dhauti — cleansing of the upper digestive tract
Dhauti works on the food pipe and the upper stomach. There are three forms: Vaman Dhauti (regurgitation), Vastra Dhauti (cloth), and Danda Dhauti (rubber catheter). Vaman Dhauti is the form most commonly taught in traditional settings.
The purpose is to remove accumulated mucus, undigested food residue, and excess acid from the upper digestive tract. The benefits — clearer digestion, reduced gas and acidity — are experienced quickly by practitioners who need them.
Benefits: Clears the digestive tract of accumulated residue, reduces gas, acidity, and indigestion.
Contraindications: Should not be practised if there is any internal injury or sensitivity in the digestive tract or stomach, including ulcers.
Nauli — abdominal churning
Nauli is the most technically demanding of the six. It involves isolating and churning the abdominal muscles in a controlled rotation — left (Vama Nauli), centre (Madhyama Nauli), and right (Pachima Nauli). Mastering the isolation takes time.
The Hatha Pradipika speaks of Nauli with particular regard for its effect on the digestive system. When the practice is established, it massages the abdominal muscles and internal organs, stimulates the digestive fire, and helps regulate blood pressure as a secondary effect.
Benefits: Strengthens the abdominal wall, stimulates the digestive system, regulates blood pressure.
Contraindications: Do not attempt Nauli if you have any sensitivity, recent surgery, or existing issues in the abdominal area. This practice requires the presence of an experienced teacher to learn correctly. No exceptions.
Basti — colon cleansing
Basti is the classical equivalent of an enema. The texts describe two forms: Jal Basti (water) and Danda Basti (with a tube). Water drawn into the large intestine churns through the colon, loosening accumulated material and smoothing the passage of undigested food.
Basti is one of the main therapeutic procedures in Ayurveda, where it is used as a primary treatment modality. Modern medicine uses the same principle in clinical enemas.
Benefits: Supports digestion, reduces bloating and gastric trouble, particularly useful for those with sedentary lifestyles and related digestive sluggishness.
Contraindications: Acute diarrhea, haemorrhoids, or rectal polyps are contraindications. Shortness of breath is also mentioned as a contraindication in some traditional sources.
How and where to learn
The classical texts give guidelines. But guidelines in books are not adjustments for your specific body. A good teacher reads the practitioner — the body type, the current state, the capacity — and modifies accordingly. That modification is what keeps the practice safe and makes it effective.
Senior teachers I have learned from consistently emphasise this: shatkarma is the first step in Niyama, specifically in Saucha — purity, the first of the personal observances. But it is a first step taken carefully, not aggressively.
As the Hatha Pradipika notes, without direct experience under qualified guidance, reading about these practices gives you the outline, not the practice itself.
People enter the hall of yoga through different doors. Shatkarma is one of the oldest ones.
You do not need to practise all six to benefit from this tradition. Many practitioners learn Jal Neti and Kapalabhati first and spend months with those two before going further. That is a reasonable, safe approach.
If you have come to yoga for physical health — that is a good enough reason. Shatkarma prepares your body to get more from asana and pranayama. Start there. Build from what works.
Happy practising, Om