what exercises that makes your brain smarter?

I know of a not-so-easy but very effective way of getting your brain to work much better and it is called 'concentration.' You know, when you focus your attention on something when you don't want to and keeping all the distractions out of your mind with only the current task in your active thoughts and never anything else, now that is hard, but it all pulls up all our other mental skills as we are able to practice our 'control of the brain' so that we do things with full attention and at the same time, train our brain to do what we want it to do. Believe it or not, it can actually improve all of our mental faculties, our logic, mathematical proficiency, abstract reasoning, etc... If you want to really know and discover an effective method, do it the hard way and so far, concentration is the only effective way. Know the potentials of the human mind; I suggest you to read Theron Q. Dumont's 'The Power of Concentration', which motivated and guided people to attain laser-focus state of mind - very nice material.

jogging is the best exercises to stay your brain alert, focus, and more relax. Try to play mind games like sodoku it would help to increase concentration, chess to improve analytical prowess and bridge for math- and problem solving skills.