The author of "Autobiography of a Yogi", Paramhansa Yoganand went to his teacher Yukteswar Giri to seek his blessing before leaving for an overseas trip. He prostrated before his teacher and asked, " Why are you asking me to go abroad?" His teacher replied, " to understand the Science of the West." The teacher explained further, " The day the spirituality of  India embraces and imbibes the Scientific thought of the West, that day the Whole world will be entranced by glorious light emerging from India." Saying this, the teacher read the following sloka from the Bhagwat Gita,

During meditation you behold divine visions, experience divine smell, divine taste, divine touch, hear divine Anahata sounds. You receive instructions from God. These indicate that the Kundalini Shakti has been awakened. When there is throbbing in Muladhara, when hairs stand on their roots, when Uddiyana, Jalandhara and Mulabandha come involuntarily, know that Kundalini has awakened. When the breath stops without any effort, when Kevala Kumbhaka comes by itself without any exertion, know that Kundalini Shakti has become active.