Lucid dreaming is almost like the real-life version of virtual reality. You're in an alternate reality; you feel as though the world has shifted under your feet, and there are no real consequences to what you do in this space. Lucid dreaming is an ancient practice.

Can a dream be a reality?

During both dreams and waking hours, your mind collapses probability waves to generate a physical reality, replete with a functioning body. You're able to think and experience sensations in a 3D world. ... We also dismiss dreams as unreal because they're associated with brain activity during sleep.

Are parallel universes possible?

It is possible, if there were enough chances, that this could occur many times, leading to a scenario that we think of as "infinite parallel Universes" to contain all possible outcomes, including the roads our Universe didn't travel, but we can only observe the one Universe we have.