Swami Vivekananda approached Yoga not as belief or symbolism, but as a science of the nervous system and consciousness. In his lectures on Raja Yoga, he repeatedly emphasized that spiritual growth depends on how energy flows through the spine.
At the center of this explanation are three channels: Ida, Pingala and Sushumna.
The Two Ordinary Currents: Ida and Pingala
Vivekananda explains that in most human beings, almost all vital energy flows through two channels.
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Ida is the left channel
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Pingala is the right channel
Together, they govern:
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Sensory perception
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Motor activity
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Emotion, reaction, and ordinary thought
These two currents keep the body alive and the mind active.
They are responsible for our daily functioning – but also for our restlessness.
As Vivekananda points out, a life lived entirely in Ida and Pingala never rises beyond the senses.
No matter how intelligent or moral a person is, their consciousness remains confined to surface experience.
The Hidden Channel: Sushumna
Between Ida and Pingala lies the Sushumna, the central, hollow canal in the spinal cord.
Vivekananda is explicit about one thing:
In the ordinary person, the Sushumna is closed at its lower end.
As long as this channel remains closed:
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Energy cannot rise to the higher brain centers
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Higher perception is impossible
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Superconscious states remain inaccessible
This is why effort alone – reading, reasoning or believing – cannot produce spiritual realization.
Why Pranayama Is Essential
Vivekananda describes Pranayama as a method for creating rhythm in the nervous system.
When breathing becomes slow, steady and controlled:
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A vibration is generated in the nerve currents
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This vibration gradually gains strength and coherence
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Eventually, it acts like a physical force
Over time, this force strikes the base of the spine and opens the Sushumna.
This is not presented as imagination or symbolism, but as a physiological event experienced by advanced practitioners.
When Energy Enters the Sushumna
The moment Prana enters the Sushumna, something fundamental changes.
Instead of being scattered through sensory and motor activity:
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Energy moves straight upward
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It flows directly toward the brain
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The mind becomes increasingly still and luminous
Vivekananda identifies this upward current as Kundalini, the dormant potential energy present in every human being.
As it rises, it awakens higher centers of perception.
From Thought to Direct Perception
According to Vivekananda, the true purpose of Yoga is not calmness, visions or altered states.
It is transformation of consciousness.
When the current reaches the brain through the Sushumna:
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The mind passes beyond reasoning
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Knowledge is no longer indirect
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Truth is seen, not inferred
This is what he calls the superconscious state (Samadhi).
In this state:
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Doubt disappears
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Knowledge becomes immediate
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The individual returns changed, strengthened, and clarified
Why This Teaching Matters
Vivekananda’s genius was to explain ancient Yogic ideas without mysticism.
He showed that:
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Spiritual experience follows laws
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Consciousness depends on energy flow
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The spine is not symbolic—it is central
Ida and Pingala sustain life.
Sushumna transforms it.
Until energy rises through the central channel, human potential remains largely unused.
Vedik Mind 