What is Aṣṭāṅga?
Aṣṭāṅga (Sanskrit: eight limbs) is the eight-limbed yoga path compiled by Patañjali in the [Yoga Sūtras](lexicon:yoga-sutras), probably in the early centuries CE. The eight limbs run from ethical restraint (yama) and personal observance (niyama), through posture (āsana) and breath regulation (prāṇāyāma), to sense-withdrawal (pratyāhāra), concentration (dhāraṇā), meditation (dhyāna), and final absorption (samādhi). Patañjali groups the last three as *saṁyama*, treating them as a single graded continuum he calls the inner work proper.
The first two limbs set the ethical floor. Yama covers five restraints directed outward: *ahiṃsā* (non-harming), satya (truthfulness), asteya (non-stealing), brahmacarya (celibacy or chastity), and aparigraha (non-grasping). Niyama covers five disciplines directed inward: śauca (cleanliness), santoṣa (contentment), *tapas* (disciplined effort), svādhyāya (self-study), and Īśvara-praṇidhāna (surrender to the divine). Āsana is the steady, comfortable seat in which the rest of the practice unfolds. Prāṇāyāma regulates the breath and the vital energy it carries. Pratyāhāra is the bridge: the senses withdraw from their ordinary objects, making the inward turn possible. Dhāraṇā focuses attention on a single point; dhyāna is the sustained meditation that arises when that focus stabilises; and samādhi is the absorption in which subject and object are no longer distinguishable.
Aṣṭāṅga and adjacent paths
Aṣṭāṅga is not the Ashtanga Vinyāsa yoga of the modern studio. That is a postural system codified by K. Pattabhi Jois from his teacher Krishnamacharya's Mysore-style practice. It took the Sanskrit name but works almost entirely within the third limb. The classical eight have largely disappeared from that appropriation. Nor is aṣṭāṅga the Buddhist Noble Eightfold Path. That is a separate eight in a different tradition, organised around right view, intention, speech, action, livelihood, effort, mindfulness, and concentration, ending in nirvāṇa rather than kaivalya. Both paths treat ethical conduct as the floor for contemplative discipline, but their metaphysics differ: Patañjali's Sānkhya dualism of puruṣa and prakṛti versus the Buddhist anattā analysis. The yamas and niyamas are also not a moral checklist. Classical commentary reads them as observations about the conditions under which the technical limbs become workable, not edicts imposed from outside.
How the limbs relate
The classical reading does not treat the eight limbs as a strict sequence to follow in order. They are mutually supporting, and the path begins wherever the practitioner can begin. A householder who holds the yamas but cannot yet sit in āsana for an hour is not disqualified. A disciplined sitter who has neglected the ethical limbs will find the inner work ungrounded. The sequence names a structural order of dependence, not a timeline. The yamas and niyamas come first because they describe the conduct without which the technical limbs produce only technique without ground. Āsana and prāṇāyāma settle the body and breath so that attention has somewhere to rest. Pratyāhāra bridges outer and inner: once the senses stop answering their ordinary objects, the concentration of dhāraṇā becomes possible. The Sūtras' central claim is yogaś cittavṛtti-nirodhaḥ: yoga is the cessation of the modifications of mind-stuff. Those modifications still when the prior limbs have done their work. Samādhi is then the natural result, not a state produced by effort at the inner stage alone.
Where to encounter it
Sadhguru's *Inner Engineering: A Yogi's Guide to Joy* is the contemporary entry into the eight-limbed framework most likely to reach a Western reader. It treats the yamas, niyamas, and inner limbs as a working curriculum rather than a historical text, grounded in the Śaiva yogic stream of southern India. The Inner Engineering Online course is the practice-side companion: kriyā-derived inner techniques that operate the prāṇāyāma, pratyāhāra, and dhāraṇā limbs without naming them in Sanskrit. Sadhguru's longer-form lectures, including the talk on disability and spiritual practice and the talk on unlocking the mind's full potential, make the citta-vṛtti-nirodhaḥ claim accessible without the technical apparatus. In each, the move is settling mental activity into the steadier ground the Sūtras call yoga. Paramahansa Yogananda's *Autobiography of a Yogi* carries the kriyā lineage of the early twentieth century: a householder transmission of inner technique that treats Patañjali's eight-limbed scheme as the operating system for its more esoteric practices. The modern Western reception of the path's posture-and-breath limbs in clinical form appears in Jon Kabat-Zinn's MBSR programme: formally a Buddhist-derived curriculum, but its body-scan and breath protocols are limbs three and four of aṣṭāṅga, extracted from the Indian frame and refigured as secular attention training.
