Chakras

So in yoga, a lot is derived from breath which controls the flow of chakra.
Chakra is a word often used in yoga describing a vivid and semi-tangible energy that flows through us. In the east it is known as an indicator of a person's aura and what they value as well as showing the levels of enlightenment they have encountered.

Chakra- the word itself- means wheel in sanskrit. Effectively, these wheels move at varying speeds and colors dependent on our influences and our own lives.

The balance of various  chakras indicated harmony and inner peace. The chakra of the universe needs to remain balanced among each of us, as it indicates a connection with the world and ourselves.

To read about the 7 major chakras, visit this link:
http://healing.about.com/od/chakratheseven/a/study7chakras.htm