Wiki: In recent times, it was taught by Paramahansa Yogananda as a part of Kriya Yoga practice.[14][15] Yogananda stated that:
Through the performance of Kechari Mudra, touching the tip of the tongue to the uvula, or "little tongue," (or placing it in the nasal cavity behind the uvula), that divine life-current draws the prana from the senses into the spine and draws it up through the chakras to Vaishvanara (Universal Spirit), uniting the consciousness with spirit.
