The problem with "new age" is the lack of preparations before going to higher levels of self-awareness. Kundalini Yoga as originally practiced, needs years and years of preparations of opening up the main Chakras so that the energy do not get clogged and backfire.
And it is not the nervous system that needs primary preparation but the endocrine system.
Anyway, check out the book
Increase Your Energy by Louis Proto which explains various alternate therapies and energy flows.
Good luck.
