Nadi (yoga)
Encyclopedia
are the channels through which, in traditional Indian medicine and spiritual science, the energies of the subtle body
Subtle body
A subtle body is one of a series of psycho-spiritual constituents of living beings, according to various esoteric, occult, and mystical teachings...

 are said to flow. They connect at special points of intensity called chakra
Chakra
Chakra is a concept originating in Hindu texts, featured in tantric and yogic traditions of Hinduism and Buddhism. Its name derives from the Sanskrit word for "wheel" or "turning" .Chakra is a concept referring to wheel-like vortices...

s. Nadis seem to correspond to the meridians
Meridian (Chinese medicine)
The meridian is a path through which the life-energy known as "qi" is believed to flow, in traditional Chinese medicine. There is no physically verifiable anatomical or histological basis for the existence of acupuncture points or meridians.- Main concepts :...

 of traditional Chinese medicine
Traditional Chinese medicine
Traditional Chinese Medicine refers to a broad range of medicine practices sharing common theoretical concepts which have been developed in China and are based on a tradition of more than 2,000 years, including various forms of herbal medicine, acupuncture, massage , exercise , and dietary therapy...

.

Early reference

An early version of the nadi system is mentioned in the Chandogya Upanishad
Chandogya Upanishad
The Chandogya Upanishad is one of the "primary" Upanishads. Together with the Jaiminiya Upanishad Brahmana and the Brihadaranyaka Upanishad it ranks among the oldest Upanishads, dating to the Vedic Brahmana period....

, which says:

Nadis are not nerves but rather channels for the flow of consciousness. The literal meaning of nadi is'flow'. Just as the negative and positive forces of electricity flow through complex circuits, in the same way, prana shako (vital force) and manas shako (mental force) flow through every part of our body via these nadis. According to the tantras there are 72,000 or more such channels or networks through which the stimuli flow like an electric current from one point to another.


The word "Nadis" can actually be correctly pronounced as "NaRdi", with R+d loosly pronounced together. In normal biological reference, a "Nardi" can be translated into "Nerve" in English. However, in Yogic, and specifically in Kundalini Yoga reference, a "Nardi" can be thought of as a channel (not an anatomical structure). In regard to Kundalini Yoga, there are three of these "Nardis". "Irda", "Pingala", and "Sushumna". "IRda" (again, R+d spoken just like in "NaRdi" - the effort is made by the tip of the tounge, it curls up, pointing backwards, then lashes out springing forward to lay flat)is lies to the left of the spine, whereas "Pingala" is to the right side of the spine, mirroring the "IRda". Sushumna runs along the spinal cord in the center, through the seven chakras, "Mooladhaar" at the base, and "Sahasrar" at the top (or crown)of the head. It is at the base of this "Sushumna" where the "Kundalini" lies coiled in three and a half coils, in a dorman or sleeping state.

Functions and Activities

Nadis are thought to carry a life force energy known as prana
Prana
Prana is the Sanskrit word for "vital life" .It is one of the five organs of vitality or sensation, viz. prana "breath", vac "speech", chakshus "sight", shrotra "hearing", and manas "thought" Prana is the Sanskrit word for "vital life" (from the root "to fill", cognate to Latin plenus...

in Sanskrit, or qi
Qi
In traditional Chinese culture, qì is an active principle forming part of any living thing. Qi is frequently translated as life energy, lifeforce, or energy flow. Qi is the central underlying principle in traditional Chinese medicine and martial arts...

in Chinese
Chinese philosophy
Chinese philosophy is philosophy written in the Chinese tradition of thought. The majority of traditional Chinese philosophy originates in the Spring and Autumn and Warring States era, during a period known as the "Hundred Schools of Thought", which was characterized by significant intellectual and...

-based systems. In particular prana
Prana
Prana is the Sanskrit word for "vital life" .It is one of the five organs of vitality or sensation, viz. prana "breath", vac "speech", chakshus "sight", shrotra "hearing", and manas "thought" Prana is the Sanskrit word for "vital life" (from the root "to fill", cognate to Latin plenus...

 (active) is supposed to circulate inside Pingala
Pingala
Pingala is the traditional name of the author of the ' , the earliest known Sanskrit treatise on prosody.Nothing is known about Piṅgala himself...

, while apana (passive) is supposed to circulate inside Ida. Inside Sushumna is supposed to circulate kundalini
Kundalini
Kundalini literally means coiled. In yoga, a "corporeal energy" - an unconscious, instinctive or libidinal force or Shakti, lies coiled at the base of the spine. It is envisioned either as a goddess or else as a sleeping serpent, hence a number of English renderings of the term such as 'serpent...

 when awakened.
The Ida and Pingala nadis are often seen as referring to the two hemispheres of the brain
Brain
The brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...

. Pingala is the extroverted (Active), solar
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

 nadi, and corresponds to the right hand side of the body and the left hand side of the brain
Brain
The brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...

. Ida is the introverted, lunar
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 nadi, and corresponds to the left hand side of the body and the right hand side of the brain
Brain
The brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...

 (crossing occurs in the optical chiasma). These nadis are also said to have an extrasensory function, playing a part in empathic and instinctive responses.
The two nadis are believed to be stimulated through different practices, including Pranayama
Pranayama
Pranayama is a Sanskrit word meaning "extension of the prana or breath" or more accurately, "extension of the life force". The word is composed of two Sanskrit words, Prāna, life force, or vital energy, particularly, the breath, and "āyāma", to extend, draw out, restrain, or...

, which involves alternate breathing through left and right nostrils, which would alternately stimulate respectively the left and right sides of the brain. The word nadi comes from the Sanskrit
Sanskrit
Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

 root nad meaning "channel", "stream", or "flow". The rhythmical breathing and special breathing techniques are supposed to influence the flow of these nadis or energetic currents. According to this kind of interpretation (which is the Yoga interpretation) the breathing techniques will purify and develop these two energetic currents and will lead to breathing special exercises whose goal is to awake kundalini
Kundalini
Kundalini literally means coiled. In yoga, a "corporeal energy" - an unconscious, instinctive or libidinal force or Shakti, lies coiled at the base of the spine. It is envisioned either as a goddess or else as a sleeping serpent, hence a number of English renderings of the term such as 'serpent...

.
Among 7 Nadi Chakras in our body. Of the seven, four are in the trunk of the body, two in the head- and there is one in the neck.
Chakra is the power center associated with the subtle body of man. Each chakra is ruled by an incarnation of Goddess Parashakti.

Ida, Pingala and Sushumna

Amongst these ducts or nadis, three are of the utmost importance: the Medullar Sushumna, which interpenetrates the cerebrospinal axis from the perineum to the juncture of the lamboid and sagittal suture of the cranium, and it is associated with both nostrils being open and free to the passage of air. The 'lunar Serpentine Ida' of the left side, of a pale color, negative polarity. It is associated with feminine attributes, the Yin
Yin
Yin may refer to:*Yin, the dark force opposing yang in traditional Chinese philosophy and medicine*Yin , a rare Chinese surname claimed to be descendents from the dynasty above....

 element of Chinese philosophy, and an open left nostril; the solar Serpentine Pingala of the right side, red color, positive polarity. It is associated with masculine attributes, the Yang
Yang
Yang may refer to:* Yang, in yin and yang, the word for one half of the two opposing forces in Chinese philosophy, described as "bright positive masculine principle" in Chinese dualistic cosmology* Yang County, in Shaanxi, China...

 element of Chinese philosophy, and an open right nostril. Those are the main nadis, but in some tantric texts more than 72,000 nadis are cited. They all start from the central channel of the chakras to the periphery, where they gradually become thinner.

The Sat-Cakra-Nirupana, one of the earliest text on nadis and chakra, explicitly refer to these three main nadis, calling them Sasi, Mihira, Susumna.


In the space outside the Meru,the right apart from the body
placed on the left and the right,
are the two Nadis, Sasi and Mihira.
The Nadi Susumna, whose substance
is the threefold Gunas,
is in the middle.
She is the form of Moon, Sun, and Fire even water also;
Her body, a string of blooming Dhatura flowers,
extends from the middle of the Kanda to the Head,
and the Vajra inside Her extends,
shining, from the Medhra to the Head.



Sushumna (alternatively known as Susumna) Nadi connects the base chakra
Muladhara
Muladhara is one of the seven primary chakras according to Hindu tantrism. It may be represented by the color red, although its root square form is usually yellow.-Location:...

 to the crown chakra
Sahasrara
Sahasrara/ Sahastrara is the seventh primary chakra according to Hindu tradition.-Location:Sahasrara is either located at the top of the head in that one area, or a little way above it .-Appearance:Sahasrara is described with 1,000 multi-coloured petals which are arranged in 20 layers each of them...

. It is very important in Yoga
Yoga
Yoga is a physical, mental, and spiritual discipline, originating in ancient India. The goal of yoga, or of the person practicing yoga, is the attainment of a state of perfect spiritual insight and tranquility while meditating on Supersoul...

 and Tantra
Tantra
Tantra , anglicised tantricism or tantrism or tantram, is the name scholars give to an inter-religious spiritual movement that arose in medieval India, expressed in scriptures ....

 in general. Alternative medicine
Alternative medicine
Alternative medicine is any healing practice, "that does not fall within the realm of conventional medicine." It is based on historical or cultural traditions, rather than on scientific evidence....

 also refers to Sushumna sometimes. In Raja Yoga
Raja Yoga
Rāja Yoga is concerned principally with the cultivation of the mind using meditation to further one's acquaintance with reality and finally achieve liberation.Raja yoga was first described in the Yoga Sutras of Patanjali, and is part of the Samkhya tradition.In the context of Hindu...

 or Yoga of Patanjali
Patañjali
Patañjali is the compiler of the Yoga Sūtras, an important collection of aphorisms on Yoga practice. According to tradition, the same Patañjali was also the author of the Mahābhāṣya, a commentary on Kātyāyana's vārttikas on Pāṇini's Aṣṭādhyāyī as well as an unspecified work of medicine .In...

, when the mind is quietened through Yama
Yama
Yama , also known as Yamarāja in India and Nepal, Shinje in Tibet, Yanluowang or simply Yan in China, Yeomla Daewang in South Korea and Enma Dai-Ō in Japan, is the lord of death, in Hinduism and then adopted into Buddhism and then further into Chinese mythology and Japanese mythology. First...

, Niyama
Niyama
Niyama generally denotes a duty or obligation adopted by a spiritual aspirant , or prescribed by a guru or by scripture...

, Asana
Asana
Asana is a body position, typically associated with the practice of Yoga, originally identified as a mastery of sitting still, with the spine as a conduit of biodynamic union...

 and Pranayama
Pranayama
Pranayama is a Sanskrit word meaning "extension of the prana or breath" or more accurately, "extension of the life force". The word is composed of two Sanskrit words, Prāna, life force, or vital energy, particularly, the breath, and "āyāma", to extend, draw out, restrain, or...

 the important state of Pratyahara
Pratyahara
Pratyahara or the 'withdrawal of the senses' is the fifth element among the Eight stages of Patanjali's Ashtanga Yoga, as mentioned in his classical work, Yoga Sutras of Patanjali composed in the 2nd century BCE....

 begins. A person entering this state never complains of Dispersion of Mind. This is characterised by observing the movements/jerks in Sushumna, the central canal in the subtle body. The movements indicate the flow of Prana
Prana
Prana is the Sanskrit word for "vital life" .It is one of the five organs of vitality or sensation, viz. prana "breath", vac "speech", chakshus "sight", shrotra "hearing", and manas "thought" Prana is the Sanskrit word for "vital life" (from the root "to fill", cognate to Latin plenus...

 through the central canal and in the process, the sushumna makes the way for the ascent of Kundalini
Kundalini
Kundalini literally means coiled. In yoga, a "corporeal energy" - an unconscious, instinctive or libidinal force or Shakti, lies coiled at the base of the spine. It is envisioned either as a goddess or else as a sleeping serpent, hence a number of English renderings of the term such as 'serpent...

.

Pingala is associated with solar energy. The word pingala means "tawny" in Sanskrit
Sanskrit
Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

. Pingala has a sunlike nature and male energy. Its temperature is heating and courses from the left testicle to the right nostril. It corresponds to the river Yamuna.
The Ida and Pingala nadis are often seen as referring to the two hemispheres of the brain. Pingala is the extroverted, solar nadi, and corresponds to the left hand side of the brain. Ida is the introverted, lunar nadi, and refers to the right hand side of the brain.

Ida is associated with lunar energy sometime it is based on solar energy. The word ida means "comfort" in Sanskrit
Sanskrit
Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

. Idā has a moonlike nature and female energy with a cooling effect. It courses from the right testicle to the left nostril and corresponds to the Ganges river. Ida nadi controls all the mental processes while Pingala nadi controls all the vital processes.

Western tradition and Interpretations

Sometimes the three main nadis (Ida, Pingala and Sushumna) are related to the Caduceus
Caduceus
The caduceus is the staff carried by Hermes in Greek mythology. The same staff was also borne by heralds in general, for example by Iris, the messenger of Hera. It is a short staff entwined by two serpents, sometimes surmounted by wings...

 of Hermes: "the two snakes of which symbolize the kundalini or serpent-fire which is presently to be set in motion along those channels, while the wings typify the power of conscious flight through higher planes which the development of that fire confers". In this framework of mystic western esotericism welded with yoga concepts, sometimes the three nadis are related and named as alchemical sulphur and alchemical mercury

"In the East, the symbol of the two serpents twisting on the rod corresponds to the two currents Pingala and Ida which coil around the Merudanda: the first is red, hot and dry, likened to the Sun and the Alchemic Sulphur; the second, Ida, is cold and wet, like the Alchemic Mercury and is correlated with the Moon for its silver pallor."


See also

  • Aura
    Aura (paranormal)
    In parapsychology and many forms of spiritual practice, an aura is a field of subtle, luminous radiation surrounding a person or object . The depiction of such an aura often connotes a person of particular power or holiness. Sometimes, however, it is said that all living things and all objects...

  • Chakra
    Chakra
    Chakra is a concept originating in Hindu texts, featured in tantric and yogic traditions of Hinduism and Buddhism. Its name derives from the Sanskrit word for "wheel" or "turning" .Chakra is a concept referring to wheel-like vortices...

  • Prana
    Prana
    Prana is the Sanskrit word for "vital life" .It is one of the five organs of vitality or sensation, viz. prana "breath", vac "speech", chakshus "sight", shrotra "hearing", and manas "thought" Prana is the Sanskrit word for "vital life" (from the root "to fill", cognate to Latin plenus...

  • Qi
    Qi
    In traditional Chinese culture, qì is an active principle forming part of any living thing. Qi is frequently translated as life energy, lifeforce, or energy flow. Qi is the central underlying principle in traditional Chinese medicine and martial arts...

  • Meridian (Chinese medicine)
    Meridian (Chinese medicine)
    The meridian is a path through which the life-energy known as "qi" is believed to flow, in traditional Chinese medicine. There is no physically verifiable anatomical or histological basis for the existence of acupuncture points or meridians.- Main concepts :...

  • Kundalini
    Kundalini
    Kundalini literally means coiled. In yoga, a "corporeal energy" - an unconscious, instinctive or libidinal force or Shakti, lies coiled at the base of the spine. It is envisioned either as a goddess or else as a sleeping serpent, hence a number of English renderings of the term such as 'serpent...

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