Yoga Nidra, Which Is Derived from the Tantras, Is Apowerful Technique In Which You Learn to Relax Consciously. In Yoga Nidra,Sleep Is Not Regarded As Relaxation. People Feel That They Are Relaxing Whenthey Collapse In an Easy Chair With a Cup of Coffee, a Drink or a Cigarette,And Read a Newspaper or Switch on the Television. But This Will Never Sufficeas a Scientific Definition of Relaxation. These Are Only Sensory Diversions. Truerelaxation Is Actually an Experience Far Beyond All This. For Absoluterelaxation You Must Remain Aware. This Is Yoga Nidra, the State of Dynamicsleep.