Central channel or Sushumna Nadi
The central channel is the channel of Evolution and at physical level it corresponds to the Parasympathetic Nervous System. In Sanskrit it is called as Sushumna Nadi or Sattva Guna. In Chinese tradition it is the same like Zhong or Shen; in condition of balance, it is the union of Yin and Yang, the union of the opposites, of the feminine and masculine aspects.
When we say that our channels, left and/or right, are out of balance, we mean that at energetic level they have shifted from the central position. Let’s imagine our central channel formed by two overlapping tubes (that are the left and right channels). If these tubes are perfectly overlapping, then the central channel is at its maximum and the Kundalini will be able to pass through it completely. If the tubes separate one from the other, then the space given by their overlapping will be reduced, that means our central channel will be reduced and so less Kundalini will be able to pass through it.
In general, the unbalance is not given entirely by one of the channel, but there could be a prevalent unbalance given by one of them, depending on our nature.
For example, let’s suppose to be men of action that do not ever get lost in emotions; we could think that our left side is alright. It could be, but it could even be that being so rational and action oriented could have harden our heart, thing that will prevent us to feel our Spirit, i.e. the pure absolute joy (Nirananda).
So, what does it mean being in the center?
There is a very interesting treatise about Yoga written by Patanjali, the Yoga Sutra, that explains in details how to reach this state and what you feel. He starts by telling “Yoga is the suspension of the activities of the mind”. This suspension can occur in the moment when we have delivered ourselves by the afflictions that disturb the balance of our consciousness; the main afflictions are ignorance, egocentricity, attachment to pleasure, aversion to pain and attachment to life.
Even Socrates, one of the famous Greek philosophers, was saying a similar thing (from “Plato’s Phaudeo”, known also as “On the Soul”): “Because every pleasure and every pain, just like nails, they nail down our soul to our body, they weld it so well till our soul becomes corporeal, to the point that she will believe true the things considered true by our body” and so “our soul performs her activity (cognitive of the Truth) when no turmoil, from our senses, comes to divert her, neither from sight nor from hearing, neither from pain nor from pleasure”.
Free from any turmoil, then it is possible to reach a first state of well-being, called as Nirvichara Samadhi, state in which “the light flows undisturbed and the universal spirit manifests itself as individual spirit”, that it is just the definition of Yoga (i.e. union of our inner Self with the Universal Self).
Formerly, reaching this state was extremely difficult, because before obtaining the Kundalini awakening you needed to purify all your chakras (without knowing which where actually blocking) and only in the end of this process you could, maybe, obtain the Yoga. This process could require the whole life, or many lives.
The main obstacle that prevent the awakening of our Kundalini by itself is given by a discontinuity at the level of our abdomen, a Void area, called as Bhavasagara in Sanskrit, that means “Ocean of Illusions”. It is usually illustrated in our chakra diagram as a green area around the third chakra.
Nevertheless, our Kundalini can be awaken on mass in this epoch thanks to the Sahaja Yoga method, as we have already said. Sahaja means spontaneous, just like the process is. Once you awaken your Kundalini, in the same way you can awaken other people’s Kundalini. It works just like an acoustic phenomenon of resonance: when your Kundalini is activated, she can activate also other people’s Kundalini by resonance. This is a fact that you can experiment for yourself.