The average cat sleeps about 2/3 of the day.
203
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
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Lack of water is the #1 trigger of daytime fatigue.
148
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29