Do you go to the gym, to develop your muscles and stay in-shape? It's a great feeling to know that you are doing good things to stay-fit. Now then... How about that ol' brain 'muscle'? Ample and good challenges to boost the power of one's brain, can be found here ~
120 Ways to Boost Your Brain Power
Why not keep exercising your body, advancing your strength capacity, as well as not forgetting to do small, but effective things, to get the most out of your brain capacity?