Tantra or yoga. Clinical studies, section 2: Tantra

Several clinical studies show how exercises in Vedic traditions, such as Yoga, or Theravada or Mahayana Buddhisms as well as tantric practices have a significant psychobiological impact. This study seeks the neurophysiological correlate of the practices called tantric and non-tantric meditations through a qualitative systematic review of the data collected. Tantric practices were proved to show increased sympathetic activity, «phasic alertness», and better performance at cognitive visual tasks. They promote greater wakefulness and decresead propensity to sleep, increased cognitive activity and metabolic changes as contrasted with those resulting from non-tantric practices due to the relaxation induced by such practices. Tantric practices create calmness and mental clarity, with enough energy and excitement to function in the environment effectively in managing irritability, stress and fatigue, as well as fear and anxiety management. The spiritual experience of "awakening" and "self-realization" has a neurofunctional and anatomical correlate of neuroplastic modifications that create new levels of sensitivity, perception and self-perception.