Sleep…. Mysterious and Fun Sommeil Sueño | Unitila Slaap | Alvás Stages 1 and 2 – light sleep Stage 3 - deep sleep - “Slow Wave Sleep” - “Delta Sleep” REM All Stages of Sleep Important Polyphasic sleep a bust Sleep Debt? Does it exist? Not clear…. Sleep = fun, pleasurable activity "Sleep rock thy brain" – Shakespeare, Hamlet Demographics Rich vs Poor Women vs Men Young vs Old "Dawn comes soon enough for the working class" - Exene Cervenka and John Doe Young Middle Age Old Young Middle Age Old NIH: Over half of Americans past age 60 have insomnia. Siestas Good for you?.... Naps (Power and Otherwise) "It’s been a hard day’s night And I’ll be sleepin´ like a log…. “ - The Beatles Orexin (aka hypocretin) Neuropeptide hormone New drugs? • Obesity • Insomnia • Alzheimer’s • Narcolepsy Orexin (aka hypocretin) Neuropeptide hormone Sex is the poor man’s opera - George Bernard Shaw (?) "Enjoy the honey-heavy dew of slumber" – William Shakespeare, Julius Caesar Sleep Culture Not something we have to do…. Something we want to do. FUN!!! Good night and sleep well.