yogic sleep →
γιογκικός ύπνοςYoga nidra (Sanskrit: योग निद्रा, yoga nidrā) or yogic sleep in modern usage is a state of consciousness between waking and sleeping, typically induced by a guided meditation.
A state called yoga nidra is mentioned in the Upanishads and the Mahabharata, while a goddess named Yoganidrā appears in the Devīmāhātmya. Yoga nidra is linked to meditation in Shaiva and Buddhist tantras, while some medieval hatha yoga texts use "yoganidra" as a synonym for the deep meditative state of samadhi. These texts however offer no precedent for the modern technique of guided meditation. That derives from 19th and 20th century Western "proprioceptive relaxation" as described by practitioners such as Annie Payson Call and Edmund Jacobson.
Yoga nidra - WikipediaYoga Nidra - 20 Minutes of Blissful Yogic Sleep Meditation for Relaxation and Healing - YouTube