The brain’s hidden worlds - dreams, hallucinations, and alternate realities

When you sleep, daydream, or drift between being awake and asleep, your brain can build entire realities - images, sounds, and emotions that feel real, even when they aren’t. And here’s the mystery: this isn’t a glitch. It’s how your brain works.Some people can even become aware inside their dreams. Others use these strange brain states to spark creativity and new ideas. So here’s the question for today: If your brain can create worlds on its own… how does it decide what’s real?Let’s find out.

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This episode is 5 minutes long.

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This episode was published on January 3, 2026.

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