Yoga Nidra or yogic sleep is a state of consciousness between waking and sleeping, like the "going-to-sleep" stage. It is a state in which the body is completely relaxed and the practitioner becomes systematically and increasingly aware of the inner world by following a set of instructions. This state of consciousness (Yoga Nidra) is different to meditation in which concentration on a single focus is required. In yoga Nidra the practitioner remains in a state of light pratyahara with four of their senses internalized, that is, withdrawn, and only the hearing still connects to the instructions. The yogic goal of both paths, deep relaxation (Yoga Nidra) and meditation are the same.
Yoga Nidra is an ancient practice modernized by Swami Satyananda Saraswati when he was living with his guru Swami Sivananda in Rishikesh. He began studying the tantric scriptures and after practice, constructed a system of popularizing in the mid 20th century. He explained Yoga Nidra as a state of mind between wakefulness and dream that opens deep phrases of the mind, suggesting a connection with the ancient tantric practice nyasa, whereby sanskrit mantras are mentally placed within specific body parts, while meditating on each part of the bodymind. called