The
Yogic,
Tantric and other systems of
Hinduism,
Vajrayana Buddhism, as well as Chinese
Taoist alchemy contain theories of subtle physiology with focal points (
chakras,
acupuncture points) connected by a series of channels (
nadis,
meridians) that convey subtle breath (
prana, vayu,
ch'i, ki,
lung). These invisible channels and points are understood to determine the characteristics of the visible physical form. By understanding and mastering the subtlest levels of reality one gains mastery over the physical realm. Through breathing and other exercises, the practitioner aims to manipulate and direct the flow of subtle breath, to achieve supernormal powers
(siddhis) and attain higher
states of consciousness,
immortality, or
liberation.
Hinduism s connected by three major
nadi channels, as commonly adopted by contemporary yoga
Early Early concepts of the subtle body (
Sanskrit:
sūkṣma śarīra) appeared in the
Upanishads, including the
Brhadaranyaka Upanishad and the
Katha Upanishad. The
Taittiriya Upanishad describes the theory of five
koshas or sheaths, though these are not to be thought of as concentric layers, but interpenetrating at successive levels of subtlety: • The
anna-maya ("food body", physical body, the grossest level), • The
prana-maya (body made of vital breath or
prana), • The
mano-maya (body made of mind), • The
vijñana-maya (body made of consciousness) • The
ananda-maya (bliss body, the subtlest level). Subtle internal anatomy included a central channel (
nadi). Later Vedic texts called
samhitas and
brahmanas contain a theory of five "winds" or "breaths" (
vayus, pranas): •
Prāṇa, associated with inhalation •
Uḍāna, associated with exhalation •
Vyāna, associated with distribution of breath within the body •
Samāna, associated with digestion •
Apāna, associated with excretion of waste
Later A millennium later, these concepts were adapted and refined by various spiritual traditions. The similar concept of the is seen as the vehicle of consciousness in later
Samkhya,
Vedanta, and
Yoga, and is propelled by past-life tendencies, or
bhavas. Linga can be translated as "characteristic mark" or "impermanence" and the Vedanta term
sarira as "form" or "mould".
Karana or "instrument" is a synonymous term. In the Classical Samkhya system of
Isvarakrsna (ca. 4th century CE), the
Lińga is the characteristic mark of the transmigrating entity. It consists of twenty-five
tattvas from eternal consciousness down to the five organs of sense, five of activity (
buddindriya or
jñānendriya, and
karmendriya respectively) and the five subtle elements that are the objects of sense (
tanmatras) The
Samkhyakarika says: The classical
Vedanta tradition developed the theory of the five bodies into the theory of the
koshas "sheaths" or "coverings" which surround and obscure the self (
atman). In classical Vedanta these are seen as obstacles to realization and traditions like Shankara's
Advaita Vedanta had little interest in working with the subtle body.
Tantra In
Tantra traditions meanwhile (
Shaiva Kaula,
Kashmir Shaivism and Buddhist
Vajrayana), the subtle body was seen in a more positive light, offering potential for yogic practices which could lead to liberation. Tantric traditions contain the most complex theories of the subtle body, with sophisticated descriptions of energy
nadis (literally "stream or river", channels through which
vayu and
prana flows) and
chakras, points of focus where nadis meet. The main channels, shared by both Hindu and Buddhist systems, but visualised entirely differently, are the central (in Hindu systems:
sushumna; in Buddhist:
avadhuti), left and right (in Hindu systems:
ida and
pingala; Buddhist:
lalana and
rasana). Further subsidiary channels are said to radiate outwards from the chakras, where the main channels meet. Chakra systems vary with the tantra; the
Netra Tantra describes six chakras, the
Kaulajñana-nirnaya describes eight, and the
Kubjikamata Tantra describes seven (the most widely known set). In the
Dzogchen tradition of
Tibetan Buddhism, the subtle body takes a different form. More specifically, the tradition points to four areas of particularly concentration of
bodily energy – viz. the heart (
tsitta), where the enlightened energy resides; the "luminous channels" (
‘od rtsa), through which the energy flows; the skull (
dung khang), where it spreads before finally being released through the fourth hot-spot, namely the eyes (
tsakshu /
briguta).
Modern The modern Indian spiritual teacher
Meher Baba stated that the subtle body "is the vehicle of desires and vital forces". He held that the subtle body is one of three bodies with which the soul must cease to identify with in order to realize God.
Buddhism In
Buddhist Tantra, the subtle body is termed the "innate body" () or the "uncommon means body" (
asadhdrana-upayadeha), or , rendered in Tibetan as
traway-lu (transliterated
phra ba’i lus). The subtle body is sometimes known as , the “body made of mind” and is the means for synchronising the body and the mind, particularly during meditation. The subtle body consists of thousands of subtle energy channels (
nadis), which are conduits for energies or "winds" (
lung or
prana) and converge at
chakras. Lati Rinbochay describes the subtle body as consisting of 72,000 channels, various winds and a white and a red drop whilst a further very subtle body is a wind abiding in a drop at the centre of the heart chakra. The central channel is then described as being squeezed by two channels that encircle it at each chakra and thrice at the heart chakra, ensuring the winds do not move upward or downward until death. Buddhist tantras generally describe four or five chakras in the shape of a lotus with varying petals. For example, the
Hevajra Tantra (8th century) states: In the Center [i.e. chakra] of Creation [at the sexual organ] a sixty-four petal lotus. In the Center of Essential Nature [at the heart] an eight petal lotus. In the Center of Enjoyment [at the throat] a sixteen petal lotus. In the Center of Great Bliss [at the top of the head] a thirty-two petal lotus. In contrast, the historically later
Kalachakra tantra describes six chakras. In
Vajrayana Buddhism, liberation is achieved through subtle body processes during
Completion Stage practices such as the
Six Yogas of Naropa.
Other traditions Other spiritual traditions teach about a mystical or divine body, such as "the most sacred body" (
wujud al-aqdas) and "true and genuine body" (
jism asli haqiqi) in
Sufism, the
meridian system in
Chinese religion, and "the immortal body" (
soma athanaton) in
Hermeticism.
Alawites,
Druze and
Ismailis all use the term "Nūranī," referring to a subtle body
made of light, from the
Nūr Muḥammadī. == Western esoteric tradition ==