The problem is that very few of us have had any formal training in the sexual arts. Most lovers simply do not have the necessary lovemaking skills to achieve sexual ecstasy. To pull it off, the lovers must remain in a high state of arousal, on the cutting edge, just below the orgasmic release point without spilling over, for a half-hour, an hour, or more. They must avoid a genital release so that the arousal has time to spread throughout the whole body, not just the genitals. If withholding genital release was correctly understood and practiced, lovers could harness the creative power inherent in the sexual force and use it for spiritual enlightenment by having prolonged, leisurely, full-body one-hour orgasms.
As you might imagine, explosive and implosive orgasms differ in their results. When sexual energy is released in a gigantic burst, the result is a reduction in sexual tension, interest and consciousness. Yes, it is quite relaxing, and may even be sleep inducing (a sure sign of energy loss), but that is the extent of it. It can never be deeply fulfilling simply because it does not involve the whole body. Only whole body orgasms stimulate the higher energy centers such as the heart and brain. As far as a man is concerned, only implosive orgasms have the capacity to leave him energetically engorged rather than sexually depleted.
The dynamic connection between ecstatic sex and spirit can only be experienced when sexual energy is contained in the body and allowed to ascend. We’ve all heard that sex begins in the brain ---- true enough ---- but while the explosive orgasm ends at the genitals and short-circuits the one-hour orgasm ---- the implosive orgasm returns the rejuvenating orgasmic energy back to its source ---- the master glands in the brain where consciousness is transformed. This recycling step is the key to spiritual illumination just as avoiding the conventional genital release is the key to the one-hour orgasm. http://www.sexualhealingnow.com/potency-principles.html