Sharpen your mind by playing fun games!
Playing Monopoly enhances mathemetical and linguistic skills - not to mention strategy skills.
There is even a special Roald Dahl version of this board game.
"Brain games are something that you do for fun, and is like going out to play ... Brain training, on the other hand, is more like going to the gym. It’s a system of exercising the brain to improve aspects of cognition like memory, attention, focus, and brain speed." Dr Michael Merzenich (BrainHQ)
You can try brain training online for free at BrainHQ