Equal Rites is a comic fantasy novel by Terry Pratchett. Published in 1987, it is the third novel in the Discworld series and the first in which the main character is not Rincewind. The title is wordplay on the phrase “Equal Rights”.
Although normally a period of meditation involving intense concentration and practice for five years or some is required to “bring up the Kundalini”, Bentov states that exposure to mechanical or acoustical vibrations in the range of 4-7 Hertz (cycles per second) for protracted periods may achieve the same effect.