Live for finding that triple-letter double-word score? Good. Scrabble strategizing could keep your neurons healthy and functioning at top speed. Folks who played the word game every week -- especially if they played to win -- scored 20 percent higher on tests of mental function, according to a recent Canadian study. Not a fan of Scrabble? Not a problem. Challenging yourself by playing fun video games for as little as 20 minutes will help you feel more awake, creative and focused for at least two hours straight say researchers at the University of California, San Diego.