It’s Hinduism rooted and basic mumbo jumbo.....basically it’s a symbolic snake that sits coiled near ones butt...via meditation and instructers they “release” this snake to travel up the spine into the head brain. (Wacky stuff uh?)
It’s occultish junk though practicing yoga etc... will deny so. However the facts are it is rooted in Hinduism practices just as New Age is.
BTW it’s tied in with ‘Kundalini’ jargon....