And the truly fun way to improve your brain naturally?
Play!
More specifically, do mental play such as word puzzles, Sudoku, and brain teasers to challenge your mind to keep all those connections active.
Physical picture puzzles and hand-held logic puzzles (think Rubik’s Cube ®) are also great fun, and incredible tools for keeping your brain alert.
Like any muscle, the more it is used, the more limber it stays, and the less often you will walk into a room for something only to promptly forget what you were looking for.
Sources:
http://whatscookingamerica.net/HydroponicsGardening/BrainBoostingTips.htm
http://www.besthealthmag.ca/best-eats/nutrition/foods-that-fight-memory-loss#Wu6Mg72RaaLEko6y.97
http://www.mayoclinic.org/healthy-lifestyle/healthy-aging/in-depth/memory-loss/art-20046518
http://www.care2.com/greenliving/10-natural-memory-loss-remedies.html.