Subtle Aspects of Yagya

The extremely subtle effects are by far the more important. Like humans, matter too, has three bodies -- physical, subtle and causal. The body which eats, sleeps, walks, acts; which consists blood, flesh etc. is visible man's physical body. Subtle body is that which thinks, considers and controls the physical body. Causal or astral body is that in which faith, convictions, aspirations etc. are deeply rooted. The subtle body is much more powerful as compared to the physical body. The casual body is several times more powerful than the subtle body.

The casual energy underlying all the Havishya used in Yagya is stimulated by the rituals prescribed for the Yagya performance. Only then alone it is possible to affect desired changes in the mind and consciousness of the participants. It this is not done, the effect of Yagya will be limited to the physical - chemical effects fo vaporization of specific substances. No doubt, several benefits can be derived by these effects too; the fumes of Yagya remove foul smell and spread soothing fragrance. It can also help in controlling virus infections and thereby promoting physical health. This is, however, an insignificant achievement, as compared to the vast potential of Yagya.
Importance of Yagya lies in the subtle power of the substances which are offered in the sacrificial fire. The selection of a particular wood or Havan Samagri depends on the purpose for which Yagya is performed.
In order to stimulate the causal energy of the offering, help of the science of Mantras is taken. The conductor of Yagya takes all precautions to ensure that the Mantras are uttered, pronounced and appropriated correctly in the pitch voice, rhythm and tone duly prescribed. Strict discipline is required to be maintained, and there should be no deviation. Shabda (the eternal and cosmic sound) is termed as Brahm. Ordinarily, it is used for exchanging of thoughts but at subtler and higher levels in Mantra, Shabda plays the role of getting transformed into potential energy.
The entire basis of the Mantra Shastra stands on the footing that the selection, interlocking and appropriation of words in a Mantra exist in such a way that it becomes possible to get miraculous advantage by making the causal energy of Shabda specifically enhanced and made more powerful.
All the pots and even water used in the Yagya are purified by specific Mantras before use. The fire-wood (Samidhas) are washed, dried and use dafter they are duly sanctified by Mantras. The process of Vedi Pujan and Yagyashala Pujan are resorted to make the Havan Kunda live….. with awaken causal energy. This as a whole is the scientific process of mass medication which strengthens the spiritual basis of the Yagya process.
It is generally experienced that Yagya (Agnihotra) --- atmosphere is very compatible and alluring for attaining spiritual uplift. Dr. Motohama of Tokyo, Japan has studied the effects of Agnihotra, with his instrument for measuring electric fields surrounding the body. He has reported that after performing an Agnihotra, the Anahata Chakra (cardiac plexus) exhibits similar condition that exists after psychic and spiritual healings.