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It’s possible to choose between being the captain or the co-pilot of your dreams. Lucid dreaming is a phenomenon that sees people taking control of the narrative of their dreams, often with thrilling results. Always wanted to fly? You can lift right off. Hungry for a giant cheeseburger? Dive right in.

Practitioners say that the technique requires discipline and patience to master. But there are also chemical shortcuts: supplements that seem to bring co