Chakras - How do they fit into AYP?

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Chakras - How do chakras figure into the AYP?
How important are chakras in advanced yoga practices?

Chakras are important, but not in the sense that they need to be intellectually understood for maximum spiritual progress to occur. For the most part, the functioning of the chakras is "under the hood." The practices in the lessons are geared toward overall spiritual awakening, and not so much on individual chakras - except the ajna to root connection, which is especially important for enlightenment.

Read more about this here :
Chakras?  
Q&A – More on chakras
Still more on Chakras
Q&A – Opening the heart chakra

and more references in the Topic Index

At the forum:
Chakra question