The brain loves images. Instead of rote memorization, Stenger advocates for creative association with imaginative pictures. For example, visualizing a giant milk can with a chicken jumping onto a loaf of bread is more memorable than simply listing 'milk, eggs, bread'.

Passive consumption rarely leads to lasting knowledge. The book emphasizes active engagement with learning material by asking questions, challenging statements, and rephrasing learned content in your own words to strengthen knowledge and critical thinking.

Mental fitness requires regular training in everyday life. Integrate small exercises into your daily routine like solving Sudoku puzzles, learning a new language, or memorizing phone numbers to maintain and improve mental performance.