Neotantra, navatantra (Sanskrit: नव, nava 'new') or tantric sex, is the modern, western variation of tantra often associated with new religious movements. This includes both New Age and modern Western interpretations of traditional Hindu and Buddhist tantra. Some of its proponents refer to ancient and traditional texts and principles, and many others use tantra as a catch-all phrase for "sacred sexuality", and may incorporate unorthodox practices. In addition, not all of the elements of Indian tantric practices are used in neotantra, in particular the reliance on a guru. As the interest in Tantra has grown in the West, its perception deviates remarkably from the Tantric traditions. It was seen as a "cult of ecstasy", combining sexuality and spirituality to correct Western repressive attitudes towards sex. Hence for many modern readers Tantra is now synonymous with "spiritual sex" or "sacred sexuality," a belief that sex should be recognized as a sacred act capable of elevating its participants to a higher spiritual plane.
The practice of Tantric Buddhism in Western Xia led to the spread of some sexually related customs. Before Uighur women in Shanxi in the 12th century could get married to men of their own ethnicity when they reached 30 years old, they would have sex and bear children with multiple Han Chinese men and their desirability as a wife corresponded to whether she had been with a large number of men.
As tantric practice became known in western culture, which has escalated since the 1960s, it has become identified with its sexual methods in the West. Consequently, its essential nature as a spiritual practice is often overlooked. The roles of sexuality in tantra and in neotantra, while related, are actually quite different, reflecting substantial differences in their cultural contexts.
Sir John George Woodroffe, also known by his pseudonym Arthur Avalon, was a British Orientalist whose work helped to unleash in the West a deep and wide interest in Hindu philosophy and Yogic practices. Alongside his judicial duties he studied Sanskrit and Hindu philosophy and was especially interested in Hindu Tantra. He translated some twenty original Sanskrit texts and published and lectured prolifically on Indian philosophy and a wide range of Yoga and Tantra topics. Woodroffe's The Serpent Power – The Secrets of Tantric and Shaktic Yoga, is a source for many modern Western adaptations of Kundalini yoga practice. It is a philosophically sophisticated commentary on, and translation of, the Satcakra-nirupana ("Description of and Investigation into the Six Bodily Centres") of Purnananda (dated around AD 1550) and the Paduka-Pancaka ("Five-fold Footstool of the Guru"). The term "Serpent Power" refers to the kundalini, an energy said to be released within an individual by meditation techniques.