The average cat sleeps about 2/3 of the day.
203
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Lack of water is the #1 trigger of daytime fatigue.
148