What is Yoga?

The word came first

Start with the word, because the word is doing two jobs.

Yoga is built from the Sanskrit root yuj. The lexicons give its plain sense: to yoke, to join, to harness. The same root sits inside the English word “yoke,” through a shared ancestor far older than either language. A farmer yokes two oxen so they pull as one. That is the picture under the word.

From that root, two meanings grow, and the tradition uses both. The first is union: the joining of the small self to something vast, the individual to the absolute. The second is discipline or method: the harness, the practice, the technique you submit to. One word, two faces. When a text says “yoga,” you have to ask which face it means, and often it means both, because the method is how the union happens.

This matters for one reason. There is no single thing called yoga. There is a word, and there are many systems that claim it. The yoga of Patanjali is not the yoga of the Bhagavad Gita, and neither is the yoga of the medieval body-texts, and none of them is the thing you would book at a studio on a Tuesday evening. They share a root and a goal. They do not share a method. Keeping them apart is most of the work of understanding what yoga is.

Patanjali’s definition: the stilling of the mind

For the classical answer, there is one text. The Yoga Sutras, attributed to a compiler called Patanjali, a string of terse aphorisms, sutras, “threads,” meant to be memorized and unpacked by a teacher.

When it was written, we do not know with certainty. Older tradition placed Patanjali in the second century before the Common Era and identified him with a famous grammarian of the same name. Modern scholarship pulls the other way. The Indologist Philipp Maas argued in 2013 that the Sutras and their core commentary, the Yoga-bhashya traditionally ascribed to Vyasa and bound with the aphorisms in the manuscripts, are one work, composed somewhere around 350 to 450 of the Common Era, by an author distinct from the grammarian. On this reading the Sutras and the Bhashya are treated as a single composition rather than text plus later commentary. Edwin Bryant settles on the fourth or fifth century. James Haughton Woods, who made the standard scholarly translation of its day (1914), favored around the year 400. The honest position is a range, and a question mark over whether “Patanjali” was one man at all.

What the text says is not in doubt. The second aphorism is the whole of classical yoga in four words. Yogash chitta-vritti-nirodhah. Woods renders it:

“Yoga is the restriction of the fluctuations of mind-stuff.”

Take it apart. Chitta is the mind-field, the whole churning apparatus of thought, memory, and ego. Vritti is a fluctuation, a wave, a turning. Nirodha is restraint, stilling, cessation. Yoga is the stilling of the turnings of the mind. Swami Vivekananda, translating the same line for a Western audience in 1896, put it as “restraining the mind-stuff from taking various forms.” Same line, same meaning. The mind is water in motion. Yoga is the water gone still.

And when it goes still, the next aphorism says what is revealed. Tada drashtuh svarupe ‘vasthanam. Woods:

“Then the Seer [that is, the Self] abides in himself.”

The “Seer” is the pure witnessing consciousness behind the noise. While the mind churns, that consciousness gets confused with the churning, mistakes the waves for itself. Still the waves, and it rests as what it is. That is the entire promise of Patanjali’s yoga, stated in the first three lines. Everything else is how.

The eight limbs, and where posture sits

The “how” is the famous part, and the most misread.

Patanjali lays out eight limbs, ashtanga, “eight-limbed,” at aphorism 2.29. Woods lists them: “abstentions and observances and postures and regulations-of-the-breath and withdrawal-of-the-senses and fixed-attention and contemplation and concentration.” In Sanskrit: yama and niyama (ethical restraints and observances), asana (posture), pranayama (breath regulation), pratyahara (withdrawal of the senses), and then the inner three, dharana, dhyana, samadhi (concentration, meditation, absorption).

Count them. Posture is the third of eight. Read what the text says about it, and the modern picture collapses. Patanjali defines asana in three words, aphorism 2.46: sthira-sukham asanam. Woods translates it “stable-and-easy posture.” A steady, comfortable seat. That is the entire definition. The commentary names a few cross-legged sitting positions and moves on. There are no sun salutations here, no flow sequences, no headstands held for the camera. The posture is a chair for the mind. You sit so that the body stops interrupting, and then the real work, the inner five limbs, begins.

So when someone says “I do yoga” and means an hour of postures, they are describing one limb of an eight-limbed system, defined by the founding text as nothing more than sitting still without strain. The tradition built a cathedral. The modern world tends to admire the doorstep.

Why isolation is the goal: the Samkhya frame

To see what yoga is for, you need the philosophy underneath it. Classical yoga does not float free. It is the practical wing of an older system of analysis called Samkhya.

Samkhya divides all of reality into two. On one side, purusha: pure consciousness, the witness, that which is aware. On the other, prakriti: nature, matter, everything that can be observed, including the mind and the emotions, which Samkhya counts as subtle matter, not as consciousness. The whole human predicament, in this analysis, is a case of mistaken identity. Purusha, pure awareness, has gotten tangled up in prakriti, has come to believe it is the body, the thoughts, the story. Suffering is that confusion.

Yoga is the method that untangles it. Where Samkhya describes the knot, yoga supplies the technique to undo it. This is why the goal has the name it has. Patanjali calls liberation kaivalya, which means “isolation” or “aloneness.” It is not union with a god. It is the consciousness standing free and alone, disentangled at last from nature, abiding as itself. The final book of the Sutras is named for it, the Kaivalya Pada.

One caution here, because people overstate it. You will read that classical yoga is “atheistic.” That goes too far. Patanjali does admit Ishvara, the Lord, a special kind of purusha never touched by suffering, and he offers devotion to Ishvara, Ishvara-pranidhana, as a real path to stillness (aphorisms 1.23 to 1.29, and again at 2.45). God has a role in Patanjali’s yoga. It is a limited, instrumental role, and liberation does not consist of reaching God. Both halves of that are true, and flattening either one misreads the text.

The Gita’s yogas: the other great source

The Yoga Sutras are not where most Hindus first meet the word. That honor belongs to the Bhagavad Gita.

The Gita is itself a yoga text, through and through. Composed somewhere between the second century before and the second century of the Common Era, set on a battlefield, it is a dialogue in which the warrior Arjuna refuses to fight and the god Krishna talks him back into the world. Every one of its eighteen chapters carries “yoga” in its title. And the Gita uses the word more loosely and more richly than Patanjali does.

Twice it stops to define it outright. At 2.48, Krishna ties yoga to evenness of mind. Kashinath Telang, in his 1882 translation for the Sacred Books of the East, renders yoga throughout as “devotion,” and gives the line:

”…Equability is called devotion.”

The Sanskrit is samatvam yoga uchyate: evenness, balance, is what is called yoga. Then at 2.50, a second definition, Telang again:

“…devotion in (all) actions is wisdom.”

The Sanskrit is yogah karmasu kaushalam, which in its literal sense reads “yoga is skill in action.” The two renderings point the same way: action carried out with an even, disciplined mind is the skillful action, and that skill is itself a kind of wisdom. Read 2.48 and 2.50 together and you have the Gita’s whole teaching on work: act with an even mind, unattached to the fruit, and ordinary action itself becomes yoga.

From this the tradition draws the Gita’s great paths. Karma yoga, the yoga of action, doing your duty without grasping at results. Bhakti yoga, the yoga of devotion, loving surrender to God, which the Gita in its twelfth chapter holds especially dear. Jnana yoga, the yoga of knowledge, discriminating the eternal self from the perishable world. And in the sixth chapter, dhyana yoga, the yoga of meditation, with its own seated discipline that rhymes with Patanjali. (Those three paths have their own home on this site, in the article on the Gita. Here it is enough to see that they all live under the one word.)

The four paths: an honest note on a modern map

This is the point where a careful piece has to slow down.

You will very often see yoga presented as four neat paths: jnana, bhakti, karma, and raja, the path of knowledge, devotion, action, and the “royal” path of meditation. It is a clean, teachable scheme. It is also, as a single fourfold system, modern.

The man who crystallized it was Swami Vivekananda, the Bengali monk who carried Hinduism to the West and electrified the 1893 Parliament of Religions in Chicago. Between 1896 and the years after, he published four books, one for each path: Jnana Yoga, Bhakti Yoga, Karma Yoga, and Raja Yoga. In the last of these he took Patanjali’s system, renamed it raja yoga, “royal yoga,” and presented it to a Western readership as the scientific, experimental core of the whole tradition. The fourfold map as we now teach it took its familiar shape in his hands.

The pieces are old. Knowledge, devotion, and action as paths are all there in the Gita, centuries before. What is recent is the tidy architecture, the four-doors-into-one-house diagram that gets drawn on whiteboards. The scholar Elizabeth De Michelis traced this in her History of Modern Yoga in 2004. The framing is rooted in tradition and was assembled in the nineteenth century. Both things are true, and a reader deserves to know which part is ancient and which part is the map.

The yoga of the body: hatha and the subtle anatomy

There is, finally, a yoga that is genuinely about the body. It is not the modern studio practice. It is older, stranger, and far more ambitious.

Hatha yoga is the yoga of forceful effort on the physical and energetic body, and its classic manuals are medieval. The Hatha Yoga Pradipika of Svatmarama dates to around the fifteenth century. The Gheranda Samhita and the Shiva Samhita come a little later. They grew out of the tantric and Natha traditions, the lineages of Matsyendranath and Gorakhnath, ascetic adepts who treated the body as the instrument of liberation rather than its prison.

These texts assume a hidden anatomy. They map nadis, channels through which subtle energy runs; chakras, centres strung along the subtle spine; and prana, the vital breath that moves through them. At the base of the spine sleeps kundalini, a coiled energy the hatha yogi works to wake and draw upward. The postures, the cleansings, the breath-locks and seals are tools for this. The body is purified and charged so that the energy can rise.

And here is the part that gets lost. Hatha never saw itself as the destination. The Hatha Yoga Pradipika says so in its second verse: hatha is taught solely for the sake of raja yoga, the meditative absorption that is the real prize. The body-work is the preparation. The goal, again, is samadhi, the still mind, the freed consciousness. Even the most physical yoga in the canon is pointed past the physical.

The modern turn: most of what we call yoga is young

So where did the mat come from?

This is now the scholarly consensus, and it is worth saying plainly. The global, posture-centred practice that the word “yoga” summons in most minds today is, in large part, a creation of the late nineteenth and twentieth centuries. The historian Mark Singleton documented it in Yoga Body, published by Oxford in 2010. His conclusion is blunt: there is no evidence in the Indian tradition for the kind of health-and-fitness asana practice that dominates the global yoga scene of the twenty-first century. Elizabeth De Michelis had mapped the same modern emergence a few years earlier.

What happened, in Singleton’s account, is a blend. Indian teachers in the late colonial period, working amid a wave of European and American physical culture, gymnastics, bodybuilding, women’s stretching regimens, and a rising Indian nationalism that wanted strong bodies, reshaped the inheritance. Hatha postures met the gymnasium. Teachers like Tirumalai Krishnamacharya in Mysore, and his students Pattabhi Jois and B.K.S. Iyengar, built flowing, athletic systems of asana that had little precedent in the old texts and went on to conquer the world.

None of this is an accusation. Modern postural yoga is a real practice with real benefits, and millions are helped by it. The point is one of honesty about lineage. When the studio sequence is described as a five-thousand-year-old discipline handed down unchanged, the history says otherwise. Most of the asanas, and the flowing choreography in particular, are recent. The same caution applies to the round numbers that float around the practice, the “eighty-four classic asanas” attributed to Shiva, the claims of vast antiquity for particular sequences. The texts that name eighty-four asanas exist; the claim that today’s flowing sequences descend intact from them does not hold up.

How to understand yoga

Hold it all in one frame and it comes clear.

Yoga is a word, yuj, the yoke, that points at one goal through many methods. The goal is freedom: moksha, kaivalya, samadhi, the consciousness no longer mistaken for the noise of the mind. Patanjali pursues it by stilling the mind through eight disciplines, of which sitting is only one. The Gita pursues it through action, devotion, and knowledge, work done with an even mind. The hatha texts pursue it through the body and its subtle energies, as preparation for the same stillness. Vivekananda gathered these into the four paths we now teach. And the modern world, in the last hundred-odd years, took the third of Patanjali’s eight limbs, crossed it with the gymnasium, and gave the result the whole ancient name.

That last practice is not a fraud. It is just the smallest room in a very large house, and it has the front door’s name painted on it. The tradition is the house. It was always pointed at freedom, and it does not need a single mat to be what it is.