There is a disease where you eventually stop sleeping, and then die. There is no cure.
In 1959, a radio DJ named Peter Tripp kept himself awake for over 200 hours for charity, and never recovered psychologically.
In 1964, a 17-year-old high school student in San Diego, California stayed awake for eleven days, demonstrating that sleep deprivation has little effect, other than the mood changes associated with tiredness. He currently holds the scientifically documented record for the longest period a human has gone without sleep.
Staying awake for 17 hours leads to a decrease in performance equal to two glasses of wine.
Otters sleep holding hands to keep from drifting apart.
1 in 4 U.S. high school students falls asleep in class every week.
Have you ever had a dream in which you wake up and go about your daily routine – only to discover that you are actually still asleep? This can be incredibly frustrating as you realize you need to re-do everything you have already done (in the dream). It is extremely realistic and most people experience it. This event is called a “false awakening” or a “dream within a dream”. It is even possible to have multiple cases of false awakenings in one dream. This is used to good effect (though perhaps it is a bit cliched now) in movies.
Sign-language users have been known to sign in their sleep.
Elephants only sleep 2 hours a day.
Dolphins sleep with one eye open.
Snails can sleep for 3 years.
Charles Dickens always slept facing north, in an effort to battle insomnia – when he travelled, he would carry a compass with him and move his bed around so it was correctly aligned. He also liked to face north while writing, believing it aided his creativity.