>>13420101You can lightly speed up your brain through a few habits and nothing else. Wanting to increase IQ is like wanting to have The Rock's body when you're a Danny DeVito. Eat healthy, sleep too much, calm down, play sports, train your brain (study, read too much, play certain types of video games, etc). By doing all of this you can score at least 5-10 more points on an IQ test because your brain will be in good shape (something anyone and at any age can do), but you will never be the next Albert Einstein.
Remember, IQ is overwhelmingly genetic.