Sex positions are positions which people may adopt during or for the purpose of sexual intercourse or other sexual activities. Sexual acts are generally described by the positions the participants adopt in order to perform those acts. Though sexual intercourse generally involves the sexual penetration of the body of one person by another, or simply direct stimulation of the sex organ of one by another, a sex position may not necessarily involve penetration or direct stimulation, and may be non-penetrative instead.

Three categories of intercourse are commonly practiced: vaginal intercourse, involving vaginal penetration by the penis; oral intercourse, involving oral caress of the penis or vagina with a partner's mouth; and anal intercourse, involving insertion into the anus of a partner's penis. Sex acts may also involve other forms of genital stimulation, such as solo/mutual masturbation, which may involve rubbing or penetration by the use of fingers or hands or by a device (sex toy) such as a dildo or vibrator. There are numerous sex positions which the participants may adopt in any of these types of sexual intercourse or acts, creating an almost limitless number of sex positions.   

When lovers lie on a bed, and embrace each other so closely that the arms and thighs of the one are encircled by the arms and thighs of the other, and are, as it were, rubbing up against them, this is called an embrace like 'the mixture of sesamum seed with rice'.

Mixture of Milk and Water

When a man and a woman are very much in love with each other, and, not thinking of any pain or hurt, embrace each other as if they were entering into each other's bodies either while the woman is sitting on the lap of the man, or in front of him, or on a bed, then it is called an embrace like a 'mixture of milk and water'. 

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During intercourse the woman turns right around the man like a horizontal wheel around a vertical axis. Profiting from certain positions the man caresses her an pinches her nipples. For her part she can fondle the chest of the reclining man, whose penis uses her like a pivot in flesh and blood. By squirming and raising herself a little, she takes up just the length of his penis she wants to feel in herself. 

"The pivot" position helps both man and woman to have a good mental concentration. That's why this position is recommended for men who have started to practice sexual continence. 

The pivot" position allows man to become more conscious of the intensity of pleasure and also to reduce it by stopping the woman's movements when he feels he is approaching the climax. For sublimation of the sexual energy both lovers have to concentrate their attention in the middle of the forehead. This will induce a state of mental clarity in both lovers, which will help them to control the sexual energy and to sublimate it in more elevated energies.