Why read a book about getting sleepy? Sleepiness is a state no one aspires to. Nearly all would agree that getting sleepy is just an irritant, a side effect of being awake too long. It’s something to be ignored for as long as possible, or “pushed through” if necessary. Those of you reading this book are no doubt hoping for more sleep—but certainly not for more sleepiness! In fact, some of you might say you are plenty sleepy already. By day, sleepiness saps your vitality and interferes with your functioning. By night it taunts you by refusing to give way to sleep itself.

Some of you, on the other hand, may be perplexed by your lack of sleepiness. How can you be so hyper, so wired, when you hardly sleep at all? Sure, you’d like to be able to wind down—but all the way down, to sleep. Sleepiness you can do without.