This is a thoroughly comprehensive look at out-of-body experiences (OBEs). It considers OBEs from historical, religious, scientific, and practical perspectives, making this book suitable both for those who want to learn OBEs, and those who want to learn to have them. It starts by looking at OBEs in history, traversing traditions from Egypt, India, China, Tibet, Persia, Europe, the life of Jesus, and more, revealing their importance in ancient religion and how some of the greatest ancient sites were used for having them. It then delves into what OBEs are, based on some of the latest scientific theories and evidence, and Mark Atwood's more than thirty years of out-of-body experience. Dreams, lucid dreaming, and near-death experiences (NDEs) are also covered in detail, and all manner of OBE phenomena are explored, such as psychedelics, sleep paralysis, nightmares, ghosts, alien abduction, encounters with demonic and angelic beings, and the existence of other dimensions. Drawing on evidence from ancient texts and sites, the authors present an authentic and effective series of exercises for having OBEs based on ancient techniques, and describe how to use them as ancient peoples did for a spiritual purpose. There are also chapters on how to lucid dream, interpret dreams and dream symbols, remember dreams better, incubate dreams with an ancient ritual, protect oneself from negative influences using ancient methods, and more. Mark Atwood is an author and practitioner of the ancient Religion of the Sun, who writes from over thirty years of dedicated spiritual practice and experience. His wife Lara Atwood is a prolific researcher who contributes her knowledge of history, ancient sites, and sacred texts.