According to the yoga technology sex is the sacred act of two souls, merging, and blending into one, an experience out of ordinary, where the dance of polarities and the subtle bodies transcends, and merges into one, as in Tantra. It’s one of the closes physical experiences to the union with infinity.
The description of the dictionary is “sexual union involving penetration of the vagina by the penis”. It describes the physical act of sex, but without any of the things mentioned before, what it is called “bucket sex”.
In the sutras of Patanjali, one of the yoga pillars, the third Yama, Not Do’s, it is Astheya, which means contingency an always controversial subject. Sex its fun, its pleasant, its creativity, why someone will choose to practice contingency?