The yoga practiced by more than twenty million people in the West is, as a form, about a century old. The man mostly responsible for creating "modern postural yoga" (MPY) was Krishnamacharya, whose school, founded in Mysore, South India, in the 1930s, "was the arena for the constitution of the modern discipline."1 The flowing sequences, the held postures, the athletic vinyasa most people picture when they hear "yoga" — that's a 20th-century creation, not an unbroken transmission from antiquity.
Two facts sit in tension and both are true. First, MPY "often bears only a slight resemblance to the haṭha-yoga tradition that inspired it" — most of its postures "are of a twentieth-century coinage."2 Second, it has a genuine ancient bloodline running underneath the recent invention. Holding both at once — recently invented and anciently descended — is the key to understanding what modern yoga actually is.
The scholar Mark Singleton's work establishes the first fact decisively: MPY "is a product of modern globalization, having early 20th-century European and American exercise forms (such as 'harmonial gymnastics') as its other influences."3 So the postural yoga of today is a fusion: haṭha-yoga teachings blended with Western physical-culture movements that were sweeping the early 20th century — gymnastics, calisthenics, "harmonial" exercise systems. Krishnamacharya, working in colonial-era Mysore, synthesized these streams into something new.
The numbers make the proportions concrete. Of MPY's postures, "at least eighty can be documented as deriving from premodern haṭha-yoga," along with the non-postural elements, "which all derive from that source."2 So there is a real haṭha core — eighty inherited postures plus the breathwork, the subtle-body framework, the meditative elements. But the bulk of the postures — the most visible, defining feature of modern yoga — are new, coined in the 20th century, many shaped by the Western exercise forms Singleton traced. Modern yoga is neither pure invention nor pure inheritance; it's a measured blend, with an ancient practical-and-philosophical core and a largely modern, globally-influenced postural surface.
Here's where it gets clever, and where modern yoga connects back to the deepest machinery of the tradition. Krishnamacharya, wanting "to emphasize the traditional roots of MPY," claimed to have "received a direct transmission of sacred knowledge from a disembodied siddha he called Nātha-muni" — note the name's connection to the Nāths — and documented this transmission in a Sanskrit text he called the Yoga-rahasya (The Secret of Yoga), evidently intended "to be the scriptural authority for the modern instantiation of yoga."4
A modern teacher inventing a new form, then receiving a Sanskrit scripture for it from a disembodied ancient master? It sounds like fabrication — until you remember the open canon. Wallis is careful: "This is of course a perfectly valid claim within the tradition, which possesses an 'open canon' that can theoretically be added to at any time — and transmission from disembodied beings in dreams and visions is well-attested."5 Krishnamacharya was doing exactly what Vasugupta did when he found the Śiva-sūtra on a rock in a dream: using the tradition's legitimate mechanism for adding new scripture by attributing it to divine/ancient transmission. Within an open-canon tradition, the Yoga-rahasya is not a forgery; it's a new revelation, authorized by the same logic that authorized the classical texts. The mechanism that let Tantra refresh itself for a thousand years is the mechanism Krishnamacharya used to authorize modern yoga.
The most satisfying move Wallis makes is to trace the actual genealogy, generation by generation — and it lands, against the odds, back at Śaiva Tantra.6
"If Krishnamacharya is the father of modern postural yoga, its grandfather was Gorakṣa, a Nāth in a Kaula-influenced lineage, which makes Matsyendra, the originator of that lineage, its great-grandfather."6 Father, grandfather, great-grandfather: Krishnamacharya → Gorakṣa (the founder of haṭha-yoga) → Matsyendra/Macchanda (the founder of the Kaula lineage). And Matsyendra was a guru of Śaiva Tantra. So the bloodline of the yoga in the studio runs: modern postural yoga ← haṭha-yoga ← the Nāth lineage ← the Kaula lineage ← Śaiva Tantra.
This is the resolution of the recently-invented/anciently-descended tension. The form (the specific postures, the vinyasa flow, the fusion with Western exercise) is a 20th-century invention. But the lineage — the chain of transmission through which the practice's core technology and authority descend — really does reach back through Gorakṣa and Matsyendra to classical Tantra. Modern yoga is a new branch on a genuinely ancient tree. The branch is young; the roots are old; both claims are true, and confusing them in either direction produces error — denying the ancient roots (it's "just modern exercise") is as wrong as denying the modern invention (it's "5,000-year-old unchanged tradition").
Wallis draws a normative conclusion from the genealogy that's worth noting as his own argument. Since modern yoga "can ultimately be traced back to" classical Śaiva Tantra, he argues that teachers seeking to "re-embed postural yoga practice in a spiritual context" and align it "with the ancient system of thought that fits most harmoniously with that practice" should align it with Tantra — the actual great-great-grandparent — rather than with Patañjali's incompatible dualism.7 The genealogy isn't just trivia; for Wallis it's a prescription for where modern yoga should look to deepen.
The practical skill this page teaches is bi-temporal honesty about your own practice: holding "recently invented" and "anciently descended" simultaneously without collapsing into either comfortable error. When a teacher or marketer tells you modern yoga is a "5,000-year-old unchanged practice," you can correct it: most of the postures are 20th-century, fused with Western gymnastics, systematized in 1930s Mysore. When a skeptic dismisses modern yoga as "just stretching with Sanskrit names," you can correct that: its non-postural core (breath, subtle body, meditation) and a real set of postures descend through a documented lineage to Śaiva Tantra, and its authority was claimed through the tradition's genuine open-canon mechanism. For a practitioner who wants depth, the actionable implication is Wallis's: if you want to root your postural practice in a coherent metaphysics, the one that actually fits — the one your practice descends from — is nondual Śaiva Tantra, not the dualist Yoga-sūtra it's conventionally paired with. And the broader transferable habit: when you encounter any "ancient tradition," ask separately about its form (often more recent than claimed) and its lineage (sometimes genuinely old), because the two are independent and conflating them is how both romanticization and debunking go wrong.
The account draws on Singleton's well-regarded scholarship on MPY's modern construction and on Wallis's genealogical tracing.36 The evidence for the "recently invented" claim (the 20th-century postures, the Western-exercise fusion, the 1930s Mysore origin) is strong and mainstream in yoga studies. The "anciently descended" claim (the father-grandfather-great-grandfather chain) is cleaner at the haṭha end and fuzzier at the Tantric end, where Matsyendra is "semi-historical, semi-legendary" and Gorakṣa's guru "may even have been a literary invention."6 Open question: how much weight can the genealogy bear at its oldest links, given that the founding figures (Matsyendra, possibly Gorakṣa's guru) are semi-legendary — is the "traces back to Śaiva Tantra" claim secure as a lineage of transmitted content (the subtle-body technology demonstrably came from Tantra) even where it's shaky as a lineage of historical persons, and does that distinction matter for what modern yoga should align itself with?
Wallis and Singleton converge completely on the modern-invention thesis — Wallis cites Singleton approvingly, and neither disputes that MPY is a 20th-century globalized construction. The interesting tension is in emphasis and purpose. Singleton's project is largely deconstructive: showing that the "ancient unchanged yoga" story is a myth, that modern postural yoga is a recent, hybrid, globally-influenced invention. Wallis accepts all of that and then pivots constructively: yes it's recently invented as a form, but its lineage genuinely reaches back to Tantra, so the right response isn't debunking but re-rooting — aligning modern yoga with its actual ancestral metaphysics. So the two scholars share every fact but lean opposite directions with them: Singleton's facts puncture a false antiquity, Wallis's same facts (plus the genealogy) recover a true one. What emerges is that "is modern yoga ancient or invented?" is a false binary that the careful answer dissolves — the form is invented, the lineage is ancient, and which truth you emphasize depends on what you're arguing against (the myth of timelessness, or the dismissal of any real heritage). Wallis's contribution is to hold both without letting either cancel the other, and to turn the genealogy from a debunking tool into a prescription for where the practice should seek its depth.
The bridge: this is a page about a recently-invented form carrying a genuinely ancient lineage, about authorizing the new by claiming old transmission, and about a globalized fusion product — each connecting outward.
The Sharpest Implication If modern yoga is a recently-invented form on a genuinely ancient lineage, then both of the confident things people say about it are half-wrong — "it's a timeless 5,000-year-old practice" and "it's just modern exercise with exotic branding" are each true about one half and false about the other. Take that seriously and you lose the comfort of a simple story in either direction, and gain a sharper instrument: the habit of asking, of anything claiming heritage, "which part is old — the form, or the bloodline?" Because they come apart constantly, and almost every romanticization and every debunking is the error of treating them as one. The deepest implication for a practitioner is Wallis's quiet one: you are practicing, in a 1930s-invented form, the distant descendant of Śaiva Tantra — and if you want your practice to mean what its inherited technology was built to mean, the metaphysics you're looking for is the one your practice actually came from, not the one the studio assigned it.
Generative Questions