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
Lack of water is the #1 trigger of daytime fatigue.
148
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Honeybees never sleep.
276
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33