After 1 year's experience in brain training, I've developed 2 brain training methods that I haven't seen anywhere else.
These 2 methods work in synergy to increase the most useful parts of intelligence.
The first method improves executive memory and attention.
The second improves intuition.
In 1 year of trying out all kinds of training methods, I haven't come across any other method that improves intuition, and intuition is what makes the difference between those who are born intelligent, and those who have become so through studies, for example.
Any suggestions as to the categories of people who would be most interested in buying these methods?