Learn one new fact or word a day
You know what they say, "If you don't use it, you'll lose it." Go to the dictionary and open it up to any page and discover a new word. Your vocabulary will be stunning in no time. Learn a new fact every day (you just learned lots about loggerhead turtles). When you find one new fact a day, you'll be surprised at how useful they are to start conversations and how many cool things there are to know. And of course, it goes without saying, you will rule at the game Trivial Pursuit.