I have looked into it but it's too much mumbo jumbo spiritual stuff. That's the impression I got from looking at some internet sites a couple of years ago. If you are into yoga you might like it. I don't think it's possible for almost anyone to have an hours long full body orgasm. I may be able to fuck for hours, but this is too much even for women, [B]to have an hours long orgasm[/B].
Frequent Orgasms and Women's Health http://healing.about.com/od/sexualhealing/a/tantricsex.htm
Frequent orgasms can benefit women's sexual health tremendously. However, there is a vast difference in having an ordinary orgasm and having a tantric orgasm. Ordinary orgasms, which are the norm, are of short duration, isolated in the sex organs. Tantric sex orgasms involve the full body, mind and spirit, lasting for hours as well.
Benefits of Tantric Orgasm
To obtain the benefits of a tantric orgasm, the shakti, or energy, the rising kundalini, must pierce each of the chakras (vortexes of energy in the subtle body) as it ascends the spinal cord. It must reach the brain's central nervous system and endocrine command center - the hypothalamus and pituitary gland, which commands the changes that benefits our sexual health.