Yoga Nidra
What is Yoga Nidra?
Yoga Nidra is derived from the wisdom of the Tantras, which contain a vast array of techniques that are designed to restore our innate understanding of nirodha or stillness, which is our essential nature.
The term yoga nidra is a combination of the Sanskrit words yoga (from the root "yuj" to yoke or union), and nidra (sleep).
It is a paradox of terms in that it plays with the words "sleep" and "awake" and is commonly translates as "sleep of the yogi".