I'm always amazed at friends who say they try to read at...

I'm always amazed at friends who say they try to read at night in bed but always end up falling asleep. I have the opposite problem. If a book is good I can't go to sleep, and stay up way past my bedtime, hooked on the writing. Is anything better than waking up after a late-night read and diving right back into the plot before you even get out of bed to brush your teeth?