Know Your Body Well to Be a Good Yogi

Kshetrajnah –
इदं शरीरं कौन्तेय! क्षेत्रमित्यभिधीयते. एतद्यो वेत्ति तं प्राहुः क्षेत्रज्ञ इति तद्विदः. क्षेत्रज्ञञ्चापि मां विद्धि सर्व्वक्षेत्रेषु भारत. क्षेत्रक्षेत्रज्ञयोर्ज्ञानं यत्तज्ज्ञानं मतं मम.

Bhagavan in Gita says – The knowledge is complete only when one knows both Kshetra and Kshetrajna.

क्षेत्रं शरीरं – क्षेत्रं जानातीति क्षेत्रज्ञः – He knows the body. He is a Maha Yogi who knows his body very well.

कृष्ण कृष्ण महायोगिन् भक्तानां अभयंकर – there is a mantra like this.

Sri Hari is a Mahayogi. You cannot be a Yogi if you don't know your body very well. You have to know the body very well to go beyond its shackles. To know how to break the shackles of the body and lead Atma towards the eternal path one should know how the body functions, all the intricacies. Body is what holds you down. Body is your limitation. Body is your body.

How do you make a new upgraded version of a software? For that you have to first understand the limitations in the existing software. You have to list them down and then find out ways and means to improvise.

Here, since body is your limitation, you have to understand the body very well to go beyond its limitations. So a Yogi has to be Kshetrajna. A Yogi knows and understands every minor activity within his body, even the subtle movements called Pranas.

Medical science knows about breathing. Air goes in and goes out. Medical science knows how the lungs function. The brain and the nervous system make the lungs function. What makes the brain and the nervous system function? Has modern science understood this? Not yet. Maybe it will, as it grows, as it matures, as it grows beyond its childish obstinacy.

But the Yogi knows this. He knows how every activity inside his body happens, not by learning from a book, but by close observation within himself. And Sri Hari, being the Mahayogi, is definitely Kshetrajna.

The mortal being does not know what the Kshetra body is for. He is the great physician Dhanvantari who knows all about the body and gives relief to thousands of those suffering from various diseases. He alone creates and dispenses medicines through doctors.

क्षेत्राख्यानि शरीराणि बीजं चापि यथासुखम् तानि वेत्ति स योगात्मा ततः क्षेत्रज्ञ उच्यते.

Kshetram means मुक्तानां भगवदनुभवस्थानम् – the place where Jeevanmuktas experience Bhagavan.

Kshetrajnah – the knower of this sthanam. He knows the place where they can be taken so that they can experience Him. Scriptures call this place as Aksha, Vyoma or Swarga – by different names.

यत्पुराणमाकाशं तत्र मे स्थानं कुर्वन् न पुनर्भवाय परमे व्योमन् सोश्नुते तेह नाकं महिमानस्सचन्ते.

They are all the same Kshetra where the ultimate Ananda is obtained. And Sri Hari is Kshetrajna.

Bhagavan tells Agastya –
पश्य लोकमिमं मह्यं यो न वेदैस्तु दृश्यते
See this world of mine, which is not seen in the Vedas. It is special.

And Agastya is filled with awe seeing Bhagavan’s world. He later describes –
भगवंस्त्वन्मयो लोकः सर्वलोकवरोत्तमः
सर्वलोका मया दृष्टा ब्रह्मशक्रादिनाम्मुने
अयं त्वपूर्वलोको मे प्रतिभाति तपोधन
संपदैश्वर्यतेजोभिर्हर्म्यै रत्नमयैस्तथा
अद्यापि तं लोकवरं ध्यायंस्तिष्ठामि सुव्रत
कदा प्राप्स्येत्त्वसौ लोकः सर्वलोकवरोत्तमः

I have seen all the worlds, that of Brahma, that of Indra, but this is something different. This is the greatest among the great. This is one of a kind. Even today, when I think about it, I simply stand in awe and meditation. I am only waiting to reach there for my permanent stay.

ब्रह्मणः सदनात्तस्य परं स्थानं प्रकाशते – it is greater than even Brahmaloka.

That is Kshetram and Sri Hari is Kshetrajna.

• What is kshetra in simple terms?
  It is the field where life plays out — your body and mind taken together. It is the stage on which sensations, thoughts, and actions appear.

• Who is a kshetrajna?
  The knower of that field. One who clearly understands how the body–mind works and does not get dragged around by it.

• Why should I study the body to grow spiritually?
  Because the body sets the boundaries for your attention, energy, and choices. Knowing its patterns lets you stop being pushed by them and start directing them.

• Is medical knowledge enough to become a kshetrajna?
  No. Medicine explains structure and mechanisms. Kshetrajna adds moment-to-moment self-observation and mastery over impulses, attention, and breath.

• What is the difference between breath and prana?
  Breath is air moving in and out. Prana is the subtle vitality that governs how body and mind function. Breath is a handle; prana is the power you steer using that handle.

• Why call the body a limitation?
  It tires, craves, fears, and ages. These constraints create habits that confine you. Seeing them clearly is the first step to working past them.

• How does one actually become a kshetrajna?
  By disciplined observation: steady posture, calm breath, focused attention, honest tracking of sensations and thoughts, and aligning daily choices with dharma.

• Is yoga about control or understanding?
  Both. Understanding reveals what to control; control stabilizes the system so deeper understanding is possible.

• What is the role of a Mahayogi here?
  A Mahayogi exemplifies perfect inner governance. He knows every layer of the field and can guide others with precision and compassion.

• How do doctors and the idea of a divine physician fit together?
  Doctors apply knowledge and skill. The divine physician is the source of the very intelligibility of healing and the order by which remedies work. Both operate in one continuum of care.

• What is meant by the place where ultimate bliss is experienced?
  A plane of reality where the coverings of ignorance fall away and awareness rests in unbroken joy. It is pointed to by names like aksha, vyoma, and swarga.

• Are those different places or the same reality?
  Different names, same truth seen from varied angles. The essence is unhindered awareness and fulfillment.

• What does it mean that there is a realm not evident in the Vedas?
  Some truths are grasped only through direct realization. Scriptures point; experience confirms and completes.

• Why is that realm said to be higher than even Brahmaloka?
  Because it is beyond cyclical creation and dissolution. It is not another stop on the journey; it is the culmination where rest is final.

• What practical change should happen if I take this seriously?
  Daily discipline: mindful eating and sleeping, breath practice, honest self-audit, service, study, and meditation. Clarity grows. Reactivity drops. Freedom becomes lived, not imagined.

Ramaswamy Sastry and Vighnesh Ghanapaathi