Using virtual reality goggles to mix up the sensory signals reaching the brain, scientists have induced out-of-body-like experiences in healthy people, suggesting a scientific explanation for a phenomenon often thought to be a figment of the imagination.

Dancing reduced the risk of dementia by 76 percent, while reading reduced that risk by only 35 percent. Dancing integrates several brain functions at once, increasing connectivity in brain paths. It simultaneously involves physical movement as well as musical, emotional and rational (rapid, complex decision making) processes. More frequent dancing produced the highest dementia prevention rates.

A 2003 study found dancing was by far the most effective brain-saving leisure activity for seniors. That includes golf, bicycling and swimming, which didn't prevent dementia at all, as well as activities like playing cards, board games, crossword puzzles and reading.