When one's subtle body travels outside of the physical body during the dream state, this experience is sometimes referred to as lucid dreaming. When … - Bhakti Tirtha Swami

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When one's subtle body travels outside of the physical body during the dream state, this experience is sometimes referred to as lucid dreaming. When metaphysicians are able to do this at will, the phenomenon is called astral projection or astral traveling: the ability to consciously leave the physical body and project the subtle body beyond its physical limitations.