I think its very much needed Lodro, in my younger days i studied Eastern Medicine, I studied the 5 Element theory, took beginning and intermediate in Jin Shin Do Accupressure, i was received my Reiki Attunement from Fran Brown, 4 Generation Master (theres only 1 real Reiki Lineage all the others are imposters) and studied Mantak Chia's works for many years, and trained in Medical QiQong under Master Po, Chang Yee.
(LoL this is what happens when you leave da Rez to go to university and end up renting a room with someone who ended up being President of the Massage Therapy Association in New Brunswick)
I never studied Tantra, and never would. What i learned was the Rise of the Kundalini Serpent, is a Life-Phase that happens on its own, when your body is ready. Even one of Peter Ross Voigt links in the other thread clearly states, it takes 20 years of work to raise the Kundalini Serpent, (he then goes on offering classes, i wonder how many of his students noticed that sentence in his introduction).
But this is very
dangerous, Sifu Dr. Ko (QiQong Master) teaches:
he focused energy of internal power - chi (qi) - can badly damage the novice or beginner. Learn the body's normal reactions-and its warning signals-before you begin the practice of chi (qi) cultivation. Always learn the exercises from a truly qualified and certified instructor and not from somebody who has just had a weekend seminar or 30-day short course on qigong and believes themselves that they can teach it to someone else.
It can even lead to psychosis > Zouhuo rumo. see the wikipedia article:
http://en.wikipedia.org/wiki/Physio-kundalini_syndromeFinally everything ive learned stated that orgasm is too be avoided during all of these exercises, it will spend all the energy you have worked so diligently to raise up.