Do you want to train your brain but have fun at the same time? Do you want to improve your problem solving and critical thinking skills? A study was run in 2014 on over 65,000 participants, assessing the effect regularly engaging in cognitively stimulating leisure activities like sudokus or crosswords can have on your brain's functioning. It was found regularly solving challenging puzzles like sudokus is significantly positively associated with: - Grammatical reasoning (strongly linked to decline with age) - Spatial working memory - Episodic memory scores (strongly linked to decline with age) Furthermore a study published in the Journal of European Psychiatric Association in 2010 found a brief two week training program in sudoku challenges improved cognitive reasoning. So if you want to keep your brain young, fit and sharp, scroll up and click 'add to cart' button now!