Your brain is one of those things that can be "use it or lose it." While it isn't a muscle, you can actually train your brain to improve your memory, help you retain information, stave off things like Alzheimer's and more.
And some people believe that an easy thing to do to achieve these things is to play a game called Sudoku. Sudoku makes you think - and think critically, and it can also help improve your concentration. It is a great game to help...