Brain Games
You have probably heard of sudoku before. Like sudoku, there are many games, quizes and puzzles out there to improve memory, train your brain, and exercise different portions of your brain. Here are some for fun; give them a try and see how big your brain is.

http://www.gamesforthebrain.com/
http://www.sheppardsoftware.com/braingames/braingames.htm
http://www.lumosity.com/brain-games
http://www.proprofs.com/games/
http://www.websudoku.com/
http://brainteasers.org/
external image sudoku508b4a6b7f4c1d65a5a9a3a78e7e48a2a1.png