The next three layers of the self are considered to be part of the subtle body or suksma-sarira. The next layer within the physical sheath is the energy body, the Pranamaya kosha. Prana means 'life force energy" as this sheath contains and regulates the movement of the physical and mental energies through the energy channels (nadis) and energy centers (chakras).

The next layer in is the mental body, the Manamaya kosha. Mana means '"mind" as this sheath contains mental thoughts and emotional feelings. This kosha governs the rational, linear, and sequential thought processes.

The last layer of the subtle body is the wisdom body, the Vijnanamaya kosha. Vijnana means "knowledge" as this sheath contains intuition, wisdom and witness consciousness.

The last kosha covering the True Self is the bliss body, the Anandamaya kosha. Ananda means "bliss" as this sheath contains the pure unchanging happiness, joy, love, peace and ecstasy that is found here at the deepest layer of our being. These are not merely feelings, but a state of being that has always existed yet has been buried by the other koshas. Behind this thin layer resides the pure consciousness of our True Self.

The koshas serve both a guide for the deeper practices of yoga and as map for our journey. The path of yoga is one of progressively moving inward, through each of the koshas, to experience the radiance of the True Self. At the same time, yoga allows this inner radiance to shine through our individuality.

In the beginning of yoga practice, the primary focus is on Annamaya Kosha, the alignment and physical sensations of the physical body. Once we have connected with this kosha we can use the breath as a bridge into the Pranamaya kosha, connecting with the energy manifesting in the body. Focusing on the body, breath and the energy absorbs the mind and the thoughts diminish allowing the Manamaya kosha to dissolve. Now we can explore the Vijnanamaya kosha to access our intuition and inner wisdom. Finally we move through the first four layers and taste the bliss, extacy and joy of the Anandamaya kosha. True enlightenment happens when all the koshas dissolve and we become absorbed in our True Self.