Sacred Tantra has been a philosopy and practice in Hindu and Buddhist cultures for many centuries. It has roots in the ancient Tao philosphy, and is recorded in ancient Vedic writings.
As in life itself one part is sexuality, which in Tantra traditions has been upheld as a sacred activity, an opportunity to worship and honour the spirit, and the gift of the human physical body.
In the West the general uninformed opinion is that it is just a form of sexual activity. In fact many cultures have made sex something to hide, to be ashamed of, to have guilt. At birth we are free of guilt, but by puberty most are indoctrinated into guilt and suffer energy blockages, particularly in the lower chakras, which can continue throughout adult life.
It does not have to be that way. With awareness and an open mind the human spirit can return to the true flowing state, and working with the healing energies of a "tantrica" can make an individual more balanced. The relationship within couples can drastically change too when the sexual pressures to "perform" are replaced by the loving respect, which comes through tantra training.
Tantra practices includes breathing, (pranayama), meditation, ceremony, healing, sensual touch, and work on the emotional and physical aspects of life. The healing can include massage and bodywork to remove blockages, including those from abuse and rape, as well as guilt, and fear.
Couples can be coached to become more intimate together, and in ways of tantric sexuality.