Drugs! Like Melatonin!
It's an over-the-counter dietary supplement, made of completely naturally occuring hormones that block off the receptors in your neurosystem, making you drowsy, and tired 24/7! Oh, and it also disturbs the bodies natural capability of producing the stuff it needs to sleep itself, soo you never forget to take your pills, because then, you won't be capable of falling asleep at all!
How do I contact the US embassy?