About Yoga Nidra

Yoga Nidra, may be rendered in English as "yogic sleep" or "sleep of the yogis". There are numerous traditions of Yoga Nidra sadhana that have been transmitted through parampara within the Indian religions. These aspects may include disciplines and traditions of dream, sleep and yoga. Fundamentally, Yoga Nidra is engaged to prepare and refine a sadhaka spiritually, emotionally, mentally and physically prior to seeking sublime levels and aspects of consciousness and awareness through meditation, trance and other sadhana not constituted by sleeping and dreamwork. In some Himalayan lineages, Yoga Nidra as Yoga of Clear Light, is a sublime sadhana and transmission modality in its own right. However, general traditions of Yoga Nidra have related a version of the practice that has become synonymous with yogic relaxation and guided visualisation techniques. . . . .from Wikipedia