Most men fluctuate according to the biological rhythms between the right and the left hemispheres, between the breath on the left nostril and that on the right nostril, between the receptive and the emissive manner of acting and thinking.

The contemporary science studied these biological rhythms, although it does not completely comprehend their roles and significance.

From a yogic perspective, this rhythmical (or non-rhythmical) alternation indicates that there are disequilibria and that each of the two manner of acting rules over the other.

The state in which both sides are equal and balanced is quite unfamiliar to most people.

According to the yogic tradition, when the two aspects are balanced, the person reaches a new level of experience that unifies logic and intuition, transforms our emotions and allows our neuronal activity to increase.

All men should properly understand this need for balance, because the state that comes along with this balance is in fact a stronger and more pleasant experience.

Einstein proved that this use of both hemispheres in a balanced manner is possible, and moreover, quite imperative.

Once when he was meditating on an imaginative experience, he had a sudden intuition, that allowed him to penetrate the mysteries of the universe, fact which indicates the use of the right hemisphere, but he also use his left side in order to construct a theory of the conversion of energy, theory which brought about a revolution in science, replacing Newton’s old paradigm.

Einstein said: “truth is intuition. First comes the thought, and I try to express it in words.”

Another example of creative, non-analytical thought is Leonardo da Vinci, who invented in 1490 a helicopter, and many other things that could be used on a large scale only centuries later.

He did not limit his accomplishments to one domain, but he reached several fields. As it seems, he used his intuition in order to visualize those apparatus because most of his works appear as drawings and visual images rather that descriptions in words.

As we have seen so far, most people fluctuate from one state to another, according to the predominant activation of one hemisphere or another.

A study performed by Raymond Klein and Roseanne Armitage from the Dalhousie University, Department of Psychology proved that the performance of those tasks characteristic to the left, respectively the right hemisphere oscillate at intervals of appreciatively 90 minutes.

These intervals correspond entirely to the fluctuations of breath, confirming thus the yogic theory according to which there is a tight relationship between the breath and the cyclic activity of the brain.

In the cases of disease, these cycles may become abnormal, and irregular from the points of view of rhythm, duration, and quality. Our whole life is dependant on these rhythms, to a degree that we do not even envisage.

The yogis have diagnosed the malfunctions of the brain rhythm through the direct examination of the respiratory rhythms through the two nostrils.

They sustain the idea that all the body parts are intimately interconnected – theory confirmed also by the recent studies in this area.

During their meditations, the yogis have the flow of energy circulating through different parts of our body, and they also perceived the more subtle levels of a human being, developing special techniques that develop a greater sensitivity and power of perception.

Consequently, these techniques allow the control over the nadis, brain, and all physiological processes.