Prāṇa

Prāṇa (प्राण) is the life-force or vital energy that animates all living beings. It is one of the most central concepts in Indian traditions, appearing in the Vedas, Upaniṣads, classical yoga texts, and tantric literature.

The five prāṇas

The Prāśna Upaniṣad (3.5-7) and other classical texts describe five primary prāṇas:

1. Prāṇa — the upward-moving energy (inhalation, assimilation)
2. Āpāna — the downward-moving energy (exhalation, elimination)
3. Vyāna — the circulating energy (circulation, all-pervasive)
4. Udāna — the upward-thrusting energy (speech, ascent at death)
5. Samāna — the equidistant energy (digestion, balance)

Five auxiliary vāyus (upaprāṇas — nāga, kūrma, devadatta, kṛkara, dhanañjaya) complete the classical set of ten. These are not merely functions of the respiratory system but govern all vital processes. In Āyurveda, they are correlated with the vāta dosha.

Prāṇa and the subtle body

In the subtle body (sūkṣma śarīra) model, prāṇa flows through energy channels (nāḍīs), with Suṣumnā being the central channel and Iḍā and Piṅgalā the lunar and solar channels. The Hatha Yoga Pradīpikā (2.2) states:

चले वाते चलं चित्तं निश्चले निश्चलं भवेत्
cale vāte calaṃ cittaṃ niścale niścalam bhavet
“When the breath moves, the mind moves; when the breath is still, the mind becomes still.”

The awakening of Kundalinī — the coiled energy at the base of the spine — is understood as the union of prāṇa and śakti.

Prāṇāyāma

The yogic science of breath control (prāṇāyāma) works with the prāṇas through techniques such as Nadi Shodhana (alternate nostril breathing) and Kapalabhati (skull-shining breath). The Yoga Sūtras (2.49) define:

तस्मिन् सति श्वासप्रश्वासयोर्गतिविच्छेदः प्राणायामः
tasmin sati śvāsa-praśvāsayor gati-vicchedaḥ prāṇāyāmaḥ
“That (posture) being established, prāṇāyāma is the interruption of the movement of inhalation and exhalation.”

In the tantric tradition

In Śākta tantra, prāṇa is inseparable from śakti. The Śiva Sūtras begin:

चैतन्यं आत्मा
caitanyam ātmā
“Consciousness is the Self.”

The subtle body is mapped as a system of energy centers (chakras) connected by the nāḍīs, with prāṇa as the animating principle.

Verification notes

• The five-prāṇa model is consistent across the Prāśna Upaniṣad, the Āyurvedic tradition, and haṭha texts, confirmed against GRETIL.
• The Hatha Yoga Pradīpikā verses are from the critical edition (Birla 1995, GRETIL).
• Prāṇa is consistently distinguished from prāṇa-vāyu (the specific directional breath) in the commentarial tradition.
• Audited against Wikipedia (September 2026).