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 burn more calories sleeping than you do watching television.
348
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33