Reading the book over again can allow you to understand it in a more in-depth perspective than you did before. You will be able to perceive new details you didn’t previously notice. Best of all, you get to relive the whole book again. A paper published in the Journal of Consumer Research found rereading offers mental health benefits because it allows more emotional connection and self-reflection instead of the first reading, which is more based and focused on the events and plot of the book.