Tantrik generally see the body as a microcosm; thus in the Kaulajnana-nirnaya, for example, the practitioner meditates on the head as the moon, the heart as the sun and the genitals as fire. Many groups hold that the body contains a series of energy centers (chakra - "wheel"), which may be associated with elements, planets or occult powers (siddhi). The phenomenon of Kundalini , a flow of energy through the chakras, is controversial; most writers see it as essential to Tantra, while others regard it as unimportant or as an abreaction. As it is, kundalini is nothing but the flow of the central sushumna nadi, a spiritual current, that, when moving, opens chakras, and is fundamental to the siddhi concept that forms a part of all tantra, including Hatha yoga.

Sexual intercourse is not at all a part of all Taantrik practice, but it is the definitive feature of left-hand Tantra. All tantra states that there were certain groups of personalities who were not fit for certain practices. Tantra was personality specific and insisted that those with pashu-bhava (animal disposition), which are people of dishonest, promiscuous, greedy or violent natures who ate meat and indulged in intoxication, would only incur bad Karma by following Taantrik paths without the aid of a Guru who could instruct them on the correct path.

There are three types of Taantrik Sex: White, Gray, and Black. White Tantra never ejaculates nor reaches orgasm in order to awaken consciousness. Gray Tantra elongates the sexual act, and sometimes concludes with orgasm/ejaculation, but without any longing towards awakening consciousness. Black Tantra always concludes with orgasm/ejaculation in order to awaken consciousness. It is said that White Tantra awakens consciousness to the absence of desire, while Black Tantra awakens consciousness into desire. In Buddhist tantra, actual ejaculation is very much a taboo, as the main goal of the sexual practice is to use the sexual energy towards achieving full enlightenment, rather than ordinary pleasure.

Sexual intercourse, preferably with a low-caste partner, was one method by which traditional left-hand practice forced practitioners to confront their conditioned responses. Others include the eating of meat (particularly beef and pork) and drinking of alcohol. Fear has also been used as a method to break down conditioning; rites would often take place in a cremation ground amidst decomposing corpses. This, of course, also falls under the prerequisite of the practitioner's nature, in such cases demanding a vir- (heroic) or even devya- (godlike) -bhava (disposition of purity, self-control, suppression of pride, respect to parents and guru and often celibacy).