Yoga Nidra, commonly known as “yogic sleep,” is a deeply restorative and meditative practice that facilitates profound physical, mental, and emotional relaxation while maintaining a trace of awareness. Rooted in ancient Indian philosophical traditions, particularly Tantra and Vedanta, Yoga Nidra offers a unique experiential pathway that leads practitioners through progressively deeper layers of consciousness. Though historically derived from esoteric yogic rituals such as Nyasa and referenced in classical texts like the Upanishads, Yoga Nidra has been systematized in modern times, most notably by Swami Satyananda Saraswati, into a structured practice accessible to the general public.

This theoretical research paper investigates the conceptual framework, philosophical foundations, and psychological mechanisms that underpin Yoga Nidra. It draws upon ancient scriptures, yogic philosophy, and modern psychological studies to understand how Yoga Nidra functions both as a spiritual discipline and as a therapeutic tool. Central to the practice is the journey through various stages including body awareness, breath observation, emotional integration, and visualization all while remaining in a hypnagogic state, a unique state of consciousness between wakefulness and sleep.

By examining these layers of practice, the paper aims to show how Yoga Nidra serves as a bridge between conscious awareness and the deeper realms of the subconscious and unconscious mind. The integration of Sankalpa (intention setting) and the deliberate withdrawal of senses (pratyahara) are emphasized as vital mechanisms for healing, transformation, and personal growth. Furthermore, the paper reviews scientific literature highlighting Yoga Nidra’s efficacy in managing stress, anxiety, PTSD, and insomnia, demonstrating its relevance in contemporary psychological and medical settings.

In essence, this paper offers a comprehensive theoretical perspective on Yoga Nidra, positioning it as a holistic practice that harmonizes ancient spiritual wisdom with modern therapeutic understanding.