zZzZ...A sleep disorder resulting in excessive sleepiness in the daytime without any warning.

zZzZ...According to Reuters Health (March 14, 2000), 1 in 2000 Americans is affected, often occuring during their teenage years.

zZzZ...A narcoleptic can fall asleep suddenly anywhere throughout the day, e.g. while having a meal, in a meeting, in a queue & even while driving!

zZzZ...Sufferers usually mistake their uncontrollable dozing off or sleepiness as a sign of exhaustion.

zZzZ...It's a life-long disease as there is no cure but it can be controlled when treated with drugs.