Putting the book under the pillow may not be a bad idea, unless, of course, it is big and provides a lumpy night's sleep.
Paul Scheele and I learned early on that if we keep a book around for a while before PhotoReading we tend to do better with it.
When you treat the book as your friend, we've found it easier to PhotoRead and understand the material. Many college students have agreed with us--I remember one student who slept with his organic chemistry book and even did pillow talk with the book. Whatever works!
Maybe it works because the book becomes less threatening or more approachable. Or maybe that is the beginning stage of PhotoSucking where you simply suck the information right out of the book!