Have you ever had similar experiences like these? You read a book from the evening till late at night, but it feels as if only two hours have passed. Or, when listening in class, the time goes faster if the teacher makes the course material interesting. Why does this happen? Is time speeding up? Actually, it is not. It’s an inner experience, known as “flow.” What is “flow” you may ask? This book will dissect this mystery for you.