The real reasons about why we dream has been revealed by a group of scientists and results were discussed at the Association for Psychological Science meeting, where Dream is as thinking but in a slightly different state from when our eyes are open.

Dreams are usually illogical and visual and "out-of-the-box" said Deirdre Barrett, a psychologist at Harvard University.

He added, "Whatever the state we're put in, we're still working on the same problems."

Dreams might have intially evolved for many reasons, though now, scientists say that it not only help reboot the brain but also problem-solve