the.com/wakefulness
the daily verdict your brain casts before you've earned a single thought
chemical switchOrexin neurons flip you awake; their loss causes narcolepsy
record holderRandy Gardner stayed awake 11 days in 1963
adenosine debtSleepiness is a molecule piling up all day
caffeine trickIt blocks adenosine, not energy you don't have
microsleepsExhausted brains nap for seconds, eyes open