How Did Sleeping Beauty Sleep So Long?

a. Narcolepsy

Maybe she wasn’t asleep for a long, long time and instead, she just fell asleep all the time. I mean, she should be dead of hunger and malnutrition otherwise.

In such case, Prince Charming probably just gave her coffee or some prescription drug like Ritalin, modafinil, dextroamphetamine, or pemoline. A cigarette probably didn’t hurt as well.

b. Depression

Maybe she wasn’t asleep but just locked herself up, shying away from the world, incapable of living among people. Having Prince Charming come along showing love and affection can do a truckload for depression.
c. Stupidity

Maybe she thought you weren’t supposed to wake up. Or that she was dead.

d. Hibernation

Maybe Sleeping Beauty was a bear. And it was that time of the year, like winter or something.

e. Cryogenics

Maybe they lived in Antartica and she was frozen in ice because, if I remember the movies correctly, her window was wide open.

What do you surmise?