The human body is Brahma-para, the city of Brahman. Ishvara Himself enters into the universe as jiva. Wherefore the maha-vakya “That thou art” means that the ego (which is regarded as jiva only from the standpoint of an upadhi) (1) is Brahman.

In the body there are five kosha or sheaths – anna-maya, prana-maya, mano-maya, vijñana-maya, ananda-maya, or the physical and vital bodies, the two mental bodies, and the body of bliss.(2)

In the first the Lord is self-conscious as being dark or fair, short or tall, old or youthful. In the vital body He feels alive, hungry, and thirsty. In the mental bodies He thinks and understands. And in the body of Bliss He resides in happiness. Thus garmented with the five garments, the Lord, though all pervading, appears as though He were limited by them. (3)

1. An apparently conditioning limitation of the Absolute.
2. According to »Theosophic« teaching, the first two sheats are apparently the physical body in its dense (Anna-Maya) and etheric (Prana.maya) forms. Mano-maya represents the astral (Kama) and lower mental body; Vijnana-maya the higher mental or (theosophical) casual body, and the higher the Atmic body.
3. Manasollasa of Suresvaracarya, Commentary on third sloka of the Daksina-murti-stotra.

ananda, bliss, brahman, etheric, jiva, kosha, maya, mental bodies, prana, self conscious, sheats