Brain power

Do you think you're intelligent? Or do you think you're unintelligent or maybe stupid? Do you believe in your brain power? Do you think that you can improve your memory? Let's think about it.
First I want to tell you about crossovers. My family like doing it so much. I asked some limbs of my huge family what theydo crosswords for and they believe, that this game can help with improve your memory, that they can find out new things and remember this by the easiest way than for example reading big books with lots of complicated words?
Second thing which is associated me with brain power are all kinds quizzes and mind games for example puzzles, scrabbles, chess etc. I recon that it'll be better for us, when we sometimes choose this kind of games instead of stupid computer games which can't give us anything? our knowledge will be reachest and we will learn logistic and more important things, that we can use in our life.
In my view our brain is constantly developing and it depend only on us how we use this power.