It is not a sexual intercourse itself but the strain of thoughts-and-wishes that exhausts a man. During a ritual sex-contact on Second System of Cosmic Control an intense psychoenergy informations interchange takes place between the partners. It occurs on a cosmic level along the eight psychic channels-rings of "miraculous meridians" and via corresponding to a given moment psychoenergy control centers - chakras, which are controlled by the Supermind on "the Earth - the Sky" principle. That is, the energy of the Sky goes through one of the partners into another one, then - into the Earth, and from there it closes the loop into Cosmos, or these energetic rings close circuit onto each other for informational exchange of knowledges and mutual psychophysical cleaning. When all that takes place, there are essentially no thoughts-and-wishes of any kind as well as no someone's willpower. There is only a work of the Highest. This is what governs the whole process. During the course of performing a ritual sexual act on the Second System of Cosmic Control and during an orgasm the partners feel their total merging into each other, as well as with Cosmos, everything live and Dao. A liquid physical part of the orgasm comes out through lower sex channels, while psychoenergetic informational part goes into Cosmos along the central axis channel through the middle of the head (through Ajna-Sahasrara), where they get unified. After that a true meditative work with the Highest follows. It goes on joint-individual plane.
This is the key moment and the main difference between using sex-meditation in Yoga and Tantra (using one's willpower) and ritual sex-contact on Second System of Cosmic Control, following the principle "God, let everything be at Your Will, - Yours, but not mine! So be it!". A ritual sex during the work under Second System of Cosmic Control - is the most difficult form of meditation, because it comprises the ritual, meditative and physical sides of life. There, the partners are in the state of Dao and merge with it into a One Whole. All the subtleties of life, the whole evolutionary struggle - everything is embodied in a mystery of sex. For it alone can illuminate all the sides of physical and ethical platforms of the partners. In it alone there's embodied everything the Creator is possessing and rich with. And due to this reason in ritual sex there should be no sexuality whatsoever, instead of it there should only be a Holiness. (Actually, the holiness should be in everything, even in sitting over a toilet bowl, for everything was born by the Emptiness of the Great Dao.). When a sexual desire appears, one should impartially, like a mirror, stand above it. And then it will disappear.
Every part of a human body is sacred, for it is the crown of the Creation of Great Dao. When merging with Him, the partners absorb in themselves a Charge of the Divine Light, Joy and Bliss, having becoming like a sun which shines the same to everyone, making no difference between rich and poor, sick and healthy, saint and criminal. All the things and people possess the state of Dao. They all came out of the Emptiness and will go back into It! Sex can elevate a person, and it can also disgrace him. Like a mirror, it reflects the essence of a human. Where the God sees himself as a God, and the pig sees a pig. For in sex there's reflected the whole Great Impartiality of Dao, as well as the whole uniqueness of the moment in "Here And Now"! All the Great and Vile, all the Wisdom and Ignorance - everything is embodied in this unique moment of merging with Dao. That's precisely why all the official religions of the world were afraid of sex, like a fire. Any human had and has in his life an opportunity to make use of sex, like a springboard, to fly through the Death and Abyss to the Enlightenment, through a feeble commonplace mindset and a routine of grey everyday life. Sex - is the window into the Unknown Kingdom of the Great Emptiness In Action, where every partner gives his comrade and brother in Spirit the opportunity to use it for a jump through Death to the Eternity of Supermind. Ritual sex during the work on Second System of Cosmic Control - is the highest form of meditation! But one has to ethically grow up to that.
Kidney massage during tantric sex-contact takes off the extra tension and furthers deeper sense of orgasm. Sex-meditation with professionally competent Shakti is dangerous for uninitiated people and those who did not have their psychic channels prior cleaned and who didn't master the method of transmuting the split of semen energy. (Shakti - is an energy collector and conductor of various types of energies of Open Cosmos. All the Shaktis are utterly individualised according to their special function. They are the driving force of the Universe.) For uninitiated into a tantric meditation person a sex-contact with Shakti - is almost certain death, partial or total paralysis as a result of disruption of psychic channels.
In ancient times, many warriors were using temple dancers-Shakti for the special tasks of destroying their spiritually illiterate opponents - the lovers of sweet and beautiful. The Shakti did not accumulate any Karma while carrying out their duties: they were desired and they were giving their experience away in its totality, and that's already too dangerous, even for the professional who is not very experienced. For "to energetically work with Shakti is the same thing as to tame a tiger with bare hands". Because during this procedure the power of energetic fields along the so-called miraculous meridians raises to such levels that the internal organs, especially brain, heart and spine - simply burn out. It's not in vain that they were preparing tantric partners for joint spiritual practice in harsh monastic ascetic lifestyle under the most austere moral-ethical discipline for few years. But a common folk is in no such danger, for they know nothing except a primitive animal sex (usual or group pornography). They are too weak in life - how would they put out to a stormy ocean of acquiring self-knowledge. While sex - is the highest form of meditation. It is double, triple or group intensive work of resonantly tuned energetic fields. It is one of the most efficient bridges on the way to Eternity of the Supermind. A series of coherently tuned biomachines, emitters of psychic energy of various classes, day and night continuously working on Second System of Cosmic Control, - is too serious even for the initiated one: one would have to get to that through prior lengthy harsh monastic preparation.