What is Yoga nidra? What are it's benefits?

Yoga nidra is a highly advanced technique that allows the body and mind to attain complete stillness. With concentrated, regular practice, one begins to harness the powers of one pointed mind, visualization, and imagination  to manifest healing, creativity, joy, transformations in all aspects: physically, mentally, and spiritually. Relaxation and rejuvenation are only the side effects of the practice. If one is receptive and sincere, infinite possibilities can be explored as one fine tunes the mind to the frequency of the Cosmic mind!