Termites work 24 hours per day and they do not sleep.
57
Dieters who sleep more take off more fat that those who sleep less.
159
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28