[QUOTE=Xtensity;55710]Go to google and search [B]biology of the kundalini[/B]. Click the first link… I would post it but it wont let me because I have under 15 post 
That site^ is very informative in terms of the biological activity of the kundalini. While the raising of the kundalini is a very spiritual activity, it also is a total physical transformation and reworking of the body, and every part of the brain.
It has to do with chemical reactions of chemicals released from the various glands. The major hormonal glands and organs throughout the body are the physical manifestations of the chakra energy centers in the body.
Eitherway… the rising of the kundalini, which many people feel as a bolt of seering hot metal shooting up the spine has to do with a nitric oxidic action. This reaction is initiated from a very small and minute gland that rest at the base of the spine in correlation with the root chakra, that modern science views as an unimportant meaningless gland. I forgot the name of it, but it rest in a cavity in the butt bone(sorry for incorrect terminology)
That site is very informative. Many people forget that energetic spiritual activity in the energy body is often directly correlated and manifest in the physical body. Good luck with the reading… there is so much on that site :p. Interesting knowledge nontheless.[/QUOTE]
Er…not everyone experiences it the same way. I feel it like a cool mentholated current rising up…and in fact as the energy rises upward, the region it has just exited feels cold (refreshingly so).