 In February 1968 , the Beatles travelled to Rishikesh , in northern India , to attend an advanced Transcendental Meditation ( TM ) training session at the ashram of Maharishi Mahesh Yogi . Amid widespread media attention , their visit was one of the band 's most productive periods . Led by George Harrison 's commitment , the Beatles ' interest in the Maharishi changed Western attitudes about Indian spirituality and encouraged the study of Transcendental Meditation . 
