While it's true that crossword puzzles or Sudokus don't exactly have well-established data to prove they can help keep your mind sharp, it is known that an inactive mind is more likely to decline. "Memory games aren't a treatment for cognitive decline and sadly, won't make a major difference over time," says Dr. Preter. "However, keeping your brain interested and engaged can delay symptoms of forgetfulness and memory loss, making these kind of games a good way to keep your brain active and engaged," says, Dr. Preter.

Trading in your fork for a pair of chopsticks can make the most routine act of eating challenging for your brain. Want an even bigger challenge? Try using the chopsticks in your non-dominant hand for double the brain workout.

If you drive home from work using the same route every single day, your brain processes the information the same way each time, using the same brain pathways. "The neural links between brain areas required to perform that trip become strong. But other links to areas that were initially activated when the route was novel --such as a new smell, sight, or sound when you rounded a certain corner -- get weaker as the trip becomes routine," says Lawrence Katz in his book.

So, by choosing a path less traveled, you open your brain up to new sensory associations and problem solving skills.