Oneironautics — traveling throughout one’s dreams on a conscious basis — may sound like the stuff of science fiction, but the practice in fact has roots all the way back to ancient Egypt and Greece. “It’s not about sleeping,” says Thomas Peisel. “It’s about waking up — waking up to your dream life.” Peisel, the co-author of “A Field Guide to Lucid Dreaming,” also teaches a course titled “Journey to the Dream World,” in which he aims to help others find the emotional healing and self-awareness that he says come with mastering the skill of lucid dreaming.

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Andrew Caringi is a freelance photographer and filmmaker from New York City. He is also a recent graduate of the CUNY Graduate School of Journalism, where he specialized in urban reporting and visual storytelling. Instagram: andrewcaringi; Twitter: @andrewcaringi; Facebook: Andrew Caringi.