Rubik's cube helps brain cells

New evidence reported recently in Scientific American. Thousands of new cells are generated in the adult brain every day, particularly in the hippo campus, a structure involved in learning and memory. Within a couple of weeks, most of those newborn neurons will die, unless the animal is challenged to learn something new. Learning—especially that involving a great deal of effort—can keep these new neurons alive.

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(Sources: http://hyderabadtalks.com/2013/07/benefits-of-solving-a-rubiks-cube/)