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
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
The human brain is more active during sleep than during the day.
28
44% of kids watch television before they go to sleep.
106
People who sleep late have more mental stamina and can outperform early risers.
33
Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
57