According to Tantric philosophy and Yoga, chakra is the Sanskrit word for 'moving wheel.' The chakras are vortexes of energy present in the energy centers of the body. The charkas are not physical, but they function as pathways for energy to be taken in. They are a part of your consciousness in the same way that an aura is a part of your consciousness. There are seven such chakras and each one is associated with a section of the body, as well as assigned emotions, thoughts and functions within the body.
Chakras are assigned a color, which is displayed in a person's aura, and can help to reveal a person's spiritual and physical health, as well as one's karma.