How does one get brain gains?
How can a /fit/ man become an intellectual?
Read books.
>>42880579
Just read the basics of philosophy, politics, economics and the most important classics
>>42880579
Have you ever heard of something called studying or reading? I heard it's like lifting for the brain.
Meditation, which is a form of mental exercise.
And try some modafinil now you're at that, it will give you a taste of what mental powers are like. Eventually you should be able to reach that state without that.
Also, reading books, provided you are already literate enough, does pretty much nothing. It changes the ideas you have in your mind and it often is very much needed, but it rarely changes how well the mind itself works.