" Many ancient teachings tell us that we have the capacity to gain extraordinary powers through grit or grace. Techniques used to achieve these supernormal abilities, known as siddhis in the yoga tradition (from the Sanskrit, meaning “perfection”2, 5), include meditation, ecstatic dancing, drumming, praying, chanting, sexual practices, fasting, or ingesting psychedelic plants and mushrooms. In modern times, techniques also include participation in extreme sports, floating in isolation tanks, use of transcranial magnetic or electrical stimulation, listening to binaural-beat audio tones, and neurofeedback. Most of these techniques are ways of transcending the mundane. Those who yearn to escape from suffering or boredom may dive into a cornucopia of sedatives and narcotics. Others, drawn to the promise of a more meaningful reality, or a healthier mind and body, are attracted to yoga, meditation, or other mind-expanding or mind-body integrating techniques. "
― Dean Radin , Supernormal: Science, Yoga and the Evidence for Extraordinary Psychic Abilities