Lack of water is the #1 trigger of daytime fatigue.
148
People who sleep late have more mental stamina and can outperform early risers.
33
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
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
The average person falls asleep in seven minutes.
115
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34