The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
47% of people have a nightmare at least once a month.
186
Lack of water is the #1 trigger of daytime fatigue.
148
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
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
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11