Йога-нидра is direction of yoga, collecting popularity in our days, - there is totality of respiratory techniques, corporal exercises and methods of work with consciousness.Йога-нидра is sent to the achievement of the maximal weakening and state of "unact", in that an organism uses the energy usually burned by a mind, for renewal and самоисцеления.Practice of йога-нидры will teach you to be weakened similarly deeply, as well as during a dream. Йогины assert that 45 minutes of employments of йога-нидрой restore an organism the same as and three o'clock of deep sleep.There are very small books on йога-нидре, and work of Камини Десаи is considered the best.