Guru says, first understand the body, then understand body’s actions and reactions and then understand the body with "I" and at last, understand "I" is not the body, "I" is the subject, enquire into this subject "Who am I?"

The body is made up of five elements, i.e., earth, water, fire, air and ether. And, in itself the body is just the lump of these five elements; these five elements integrate into a body during the time of a child birth, and at the time of death, all the five elements disintegrate.

The body works for various actions and reactions, for gross, they are: walking, talking, eating, sleeping and fighting etc, for subtle, they are: smelling, feeling, thinking, hearing and watching etc.

When one says, I did, I felt and I ate etc, one says to the body, can the body be "I?" Never! "I" is the subject, and the body is the object. But, when the "I" is identified with the object – a person forgets who he is, and starts determining that the body is everything.

When one understands "I" is not the body, but uses the body and feels a separation from it and with this subjectivity when one asks the question "Who am I?" with deep enquiry, then the illumination, self realization or call enlightenment happens.