It does more than two thousand years, in India, a called man Nandim wrote aphorisms of the love in 1.000 chapters.
It was summarized, interpreted and been brief by several authors, but the one that has arrived to the present time is of Mallanaga Vatsyayana, author of the Kamasutra that today is known.
Little one knows of Vatsyayana, that it was only born in the Southeast of India around century III of ours was and that, being based mainly on writings of Nandim and their own experiences and reflections, wrote the Kamasutra, a book dedicated to the accommodated citizens of the Hindu society to instruct them in the love arts and that has become a chronicle of the customs of the time.
What less it is possible to be found in the Kamasutra is pornography, because is a seriously written book and rigor almost scientist, since Vatsyayana begins to study the characteristics of men and women to whom it classifies by species, as if a treaty of Biology it was.

The man above feels like with the open legs and their companion (already penetrated) of him.
Taking it from the wrists, it is relaxed backwards until falling completely: she must be super relaxed and given to the force of his companion who attracts his body with his arms causing the necessary attack for the sex.
It is a complicated position since she requires the liviandad of the woman, enough balance of both and the force and ability of the man. Ideal to change the routine and to prove new emotions…